Science
229 Documents
- Ancient macrofossils unearthed in West Africa : Nature News
Two-billion-year-old fossils could indicate steps towards multicellularity.
2010-06-30
- Caral
2010-06-29
- universcience.tv la Web TV scientifique
2010-06-26
- Technology Review: Blogs: arXiv blog: New Quantum Theory Separates Gravitational and Inertial Mass
2010-06-23
- Zéro déforestation | Mobilisez-vous pour la sauvegarde des forêts et du climat
Greenpeace appelle à « zéro déforestation d'ici 2020 »
2010-06-17
- BBC News - Asteroid probe 'on home straight'
2010-06-04
- Un champignon menace la production mondiale de blé
Le blé représente 20 % de la ration alimentaire que la population mondiale consomme chaque jour
2010-05-28
- Guerre aux paysans, par Hervé Kempf
"La biodiversité ? Il ne s'agit pas que de petits oiseaux, mais aussi du conflit violent et très humain entre la course au profit maximal et le souci de vivre dignement de son travail et de la terre."
2010-05-25
- BBC News - 'Artificial life' breakthrough announced by scientists
2010-05-20
- Un siècle de progrès sans merci
2010-05-10
- CERN (CERN) on Twitter
2010-03-30
- LHC research programme gets underway
Beams collided at 7 TeV in the LHC at 13:06 CEST, marking the start of the LHC research programme.
2010-03-30
- Mal à l'Europe - Chronique Ecologie, Hervé Kempf
Déni de démocratie, volonté de se plier aux desiderata des industriels, mépris implicite d'une agriculture qui ne serait pas productiviste : voilà ce qu'est cette décision. Mais il y a plus grave encore, qui touche à l'idéal européen lui-même. Pour continuer à imposer les OGM, la Commission veut que chaque Etat puisse choisir s'il les autorise ou pas chez lui. Cela revient à diviser l'Union, à la laisser aller à hue et à dia sur une question éminemment importante, qui n'est pas de simple convenance nationale, mais implique une politique agricole commune.
2010-03-07
- Fleurs en poche : identifiez les fleurs sauvages avec votre iPhone
2010-02-23
- Learning From Europe
2010-01-12
- Le Monde selon Monsanto
De la dioxine aux OGM, une multinationale qui vous veut du bien
2010-01-06
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Greenpeace: zéro déforestation d'ici 2020
2009-12-19
- LHC (en français)
2009-11-27
- Free-flying cyborg insects steered from a distance - tech - 01 October 2009 - New Scientist
2009-11-13
- Ecologistes et agriculteurs s'affrontent durement sur la déforestation de l'Amazonie
"La rémunération du service environnemental est la solution à tous nos problèmes"
2009-07-28
- BBC - Earth News - Ant mega-colony takes over world
2009-07-10
- BBC NEWS | Science & Environment | 'Misty caverns' on Enceladus moon
Nasa's Cassini spacecraft has obtained strong evidence that Saturn's tiny moon Enceladus retains liquid water.
2009-06-25
- A Mathematician’s Lament
I don’t see how it’s doing society any
good to have its members walking around with vague memories of
algebraic formulas and geometric diagrams, and clear memories of
hating them. It might do some good, though, to show them
something beautiful and give them an opportunity to enjoy being
creative, flexible, open-minded
You don’t need to make math interesting— it’s already more
interesting than we can handle! And the glory of it is its complete irrelevance to our lives.
Mathematics is the music of reason.
We learn things because
they interest us now, not because they might be useful later.
How many students taking literature classes will one day be writers?
That is not why we teach literature, nor why students take it. We
teach to enlighten everyone, not to train only the future professionals.
In any case, the most valuable skill for a scientist or engineer is being
able to think creatively and independently. The last thing anyone
needs is to be trained.
2009-06-22
- ESA - Herschel
2009-06-19
- Herschel Science Centre
2009-06-19
- HERSCHEL : lumière sur les mondes enfouis de l'Univers (herschel.cea.fr)
2009-06-19
- Un siècle de progrès sans merci
2009-06-17
- Boubé Gado, Le Zarmatarey, Contribution à l'histoire des populations d'entre Niger et Dallol Mawri
2009-06-14
- IREM de Paris Nord (Institut de Recherche en Enseignement des Mathématiques)
2009-06-01
- BBC NEWS | World's most daunting parking job
2009-05-12
- BBC NEWS | 'Silver sensation' seeks cold cosmos
2009-05-12
- BBC NEWS | Science & Environment | Peering into Hubble's future
2009-05-12
- BBC NEWS | Telescopes given 'go' for launch
2009-05-06
- BBC NEWS | Africa's genetic secrets unlocked
2009-05-06
- BBC NEWS | Science/Nature | When humans faced extinction
2009-05-06
- Théorème de Pythagore, 6 démonstrations
2009-05-03
- Semantic Technologies for Archaeological Resources
2009-04-20
- Thucydide, la guerre du Péloponèse : oraison funèbre prononcée par Périclès
Les hommes éminents ont la terre entière pour tombeau.
2009-03-05
- le Kangourou des mathematiques
2009-01-22
- Symmetric matrices related to the Mertens function
In this paper we explore a family of congruences over N* from which a sequence of symmetric matrices related to the Mertens function is built. From the results of numerical experiments we formulate a conjecture, about the growth of the quadratic norm of these matrices, which implies the Riemann hypothesis. This suggests that matrix analysis methods may play a more important role in this classical and difficult problem.
2009-01-20
- A Farm Boy Reflects
Very often, one goose would bravely step away from the panicked flock and walk tremulously toward me. It would be the mate of the one I had caught, male or female, and it would step right up to me, protesting pitifully. It would be frightened out of its wits, but still determined to stand with and comfort its lover.
2009-01-16
- BBC NEWS | Science & Environment | Crop diversity: Eat it or lose it
2009-01-07
- Facts versus Factions: the use and abuse of subjectivity in scientific research - PART 2
2009-01-06
- Facts versus Factions: the use and abuse of subjectivity in scientific research
2009-01-06
- La technique de l'insecte stérile va être testée pour lutter contre le paludisme et le chikungunya
2008-12-27
- Genetic Programming: Evolution of Mona Lisa « Roger Alsing Weblog
2008-12-10
- Mediterranean Ceramics: RDFa at Ilion
The Greek, Roman and Byzantine Pottery at Ilion (GRPBIlion) database exports its content as Linked Data using RDFa
2008-12-08
- IBM plans 'brain-like' computers
IBM has announced it will lead a US government-funded collaboration to make electronic circuits that mimic brains.
2008-11-24
- Kurzweil: "Technology is a double-edged sword"
Ray Kurzweil, inventor and futurist on the Turing Test, human vs machine intelligence, why being funny is clever, and the dangers of advanced technologies...
2008-11-21
- L'Erta Alé, volcan actif dans le Danakil
2008-11-21
- Le Dallol (photos)
2008-11-21
- Le Triangle Afar: entre Ethiopie et Djibouti
2008-11-21
- Global Volcanism Program | Dallol.jpg
2008-11-21
- BBC NEWS | Science & Environment | Oldest nuclear family 'murdered'
The oldest genetically identifiable nuclear family met a violent death, according to analysis of remains from 4,600-year-old burials in Germany.
2008-11-19
- Parque Nacional Serra da Capivara - Wikipédia, a enciclopédia livre
2008-10-26
- Pre-Siberian American Aborigines - Wikipedia, the free encyclopedia
2008-10-26
- Manifesto for Apes and nature [mAn]
Tropical forests are disappearing at an excessive speed and with them the last populations of great apes. All specialists are unanimous: if we do nothing gorillas, chimpanzees and bonobos will have disappeared by the middle of the 21st century. The situation of orangoutans is even more dramatic; in 20 years time, they might only exist in zoos. Today, it is important to become active in order to stop this Ecocide! We, citizens of the Earth, ask our governments and international authorities to accept as their superior duty to save and protect primates.
2008-10-22
- Momies du Taklamakan
2008-10-20
- On two iterative methods for approximating the roots of a polynomial
2008-10-05
- 1729 = 12^3 + 1^3 = 10^3 + 9^3
2008-10-02
- DARPA Mathematical Challenges
2008-10-01
- Infos de la Planète - Mali: Coupe de bois contre hôpital et 3e pont ? - Les Echos (Mali) - 2008-09-16
2008-09-24
- Biologists on the Verge of Creating New Form of Life | Wired Science from Wired.com
Szostak's protocells are built from fatty molecules that can trap bits of nucleic acids that contain the source code for replication. Combined with a process that harnesses external energy from the sun or chemical reactions, they could form a self-replicating, evolving system that satisfies the conditions of life, but isn't anything like life on earth now, but might represent life as it began or could exist elsewhere in the universe.
2008-09-10
- Large Hadron Collider May Explain Atom's Mysteries | Newsweek.com
2008-09-09
- Oldest Skeleton in Americas Found in Underwater Cave?
2008-09-05
- Cosmology -04 September 2006 - New Scientist Space
2008-08-28
- NOVA | Mystery of the Megaflood
2008-08-25
- Une suite de matrices symétriques en rapport avec la fonction de Mertens
In this paper we explore a class of equivalence relations over N* from which is constructed a sequence of symetric matrices related to the Mertens function. From numerical experimentations we suggest a conjecture, about the growth of the quadratic norm of these matrices, which implies the Riemann hypothesis. This suggests that matrix analysis methods may play a more important part in this classical and difficult problem.
2008-08-17
- IEEE Spectrum: Special Report: The Singularity
The singularity: when machines become conscious
2008-08-17
- Infos de la Planète - Tendance : Ces milliardaires qui croient sauver la planète… - The Guardian (Royaume-Uni) - 2008-02-13
La propriété privée est désormais le moyen retenu pour empêcher les promoteurs, l’industrie ou la négligence de ravager la nature.
2008-08-15
- Tela Botanica - Le réseau de la botanique francophone
2008-06-30
- List of animals by number of neurons - Wikipedia, the free encyclopedia
2008-06-22
- Polar bear executed in Iceland
2008-06-21
- NASA - Solar Probe Plus - Nasa plans to visit the sun
At closest approach, Solar Probe+ will be 7 million km or 9 solar radii from the sun. There, the spacecraft's carbon-composite heat shield must withstand temperatures greater than 1400o C and survive blasts of radiation at levels not experienced by any previous spacecraft. Naturally, the probe is solar powered.
The two mysteries prompting this mission are the high temperature of the sun's corona and the puzzling acceleration of the solar wind.
2008-06-12
- Bacteria make major evolutionary shift in the lab -New Scientist
2008-06-12
- Experiences with the conversion of SenseLab databases to RDF/OWL
2008-06-12
- A Prototype Knowledge Base for the Life Sciences
The prototype we describe is a biomedical knowledge base, constructed for a demonstration at Banff WWW2007 , that integrates 15 distinct data sources using currently available Semantic Web technologies such as the W3C standard Web Ontology Language [OWL] and Resource Description Framework [RDF]. This report outlines which resources were integrated, how the knowledge base was constructed using free and open source triple store technology, how it can be queried using the W3C Recommended RDF query language SPARQL [SPARQL], and what resources and inferences are involved in answering complex queries. While the utility of the knowledge base is illustrated by identifying a set of genes involved in Alzheimer's Disease, the approach described here can be applied to any use case that integrates data from multiple domains.
2008-06-12
- Oregon Fossil Guy - Plant & Animal Fossils - Geologic History
2008-05-19
- Oregon Department of Geology and Mineral Industries (DOGAMI) Homepage
2008-05-18
- Oregon Paleo Lands Institute
We’ll take you and your family on a customized day hike to collect fossils, touch a 44-million-year-old tree, visit a lakeshore 33 million years old, or volunteer to assist paleontologists in their research.
2008-05-18
- La mesure des distances en astronomie des origines à nos jours
2008-05-17
- Voyager 2 Proves the Solar System is Squashed
2008-05-17
- BBC NEWS | Mars probe set for risky descent
2008-05-17
- The Paleobiology Database
The Paleobiology Database is an international scientific organization run by paleontological researchers from many institutions. We are bringing together taxonomic and distributional information about the entire fossil record of plants and animals. Our goal is to educate the public, summarize the literature for professionals, and foster statistical analyses of mass extinctions and other aspects of biodiversity.
2008-05-12
- Fouilles de Corent
2008-05-08
- BBC NEWS | Faeces hint at first Americans
2008-04-13
- BBC NEWS | Science/Nature | Secret 'dino bugs' revealed
2008-04-10
- France 5 : Les maternelles - Ecologie (Les Petits Débrouillards)
Grâce à ces filets à nuages (il y en a une centaine, hauts de 4 mètres et long de 12 mètres) tendus le long d'une crête, à 800 mètres d'altitude, l'eau des brumes persistantes est retenue dans les mailles, sous forme de gouttelettes qui ruissellent le long de gouttières, s'écoulent dans une tuyauterie jusqu'à une citerne installée dans le village. Résultat, grâce à ce système, 15 000 litres peuvent être récupérés chaque jour.
2008-04-08
- Cassini-Huygens: Enceladus: A Perspective on Life on Enceladus: A World of Possibilities
In recent years, life forms have been found on Earth that thrive in places where the sun doesn't shine and oxygen is not present because no photosynthesis takes place...
There are three such ecosystems found on Earth that would conceivably be a basis for life on Enceladus. Two are based on methanogens, which belong to an ancient group related to bacteria, called the archaea -- the rugged survivalists of bacteria that thrive in harsh environments without oxygen. Deep volcanic rocks along the Columbia River and in Idaho Falls host two of these ecosystems, which pull their energy from the chemical interaction of different rocks. The third ecosystem is powered by the energy produced in the radioactive decay in rocks, and was found deep below the surface in a mine in South Africa.
2008-04-07
- Heavy Boots
2008-03-29
- WR 104: The prototype Pinwheel Nebula
A spectacular, rotating binary star system is a ticking time bomb, ready to throw out a searing beam of high-energy gamma rays – and Earth may be right in the line of fire.
2008-03-06
- Scientists Build First Man-Made Genome; Synthetic Life Comes Next
2008-01-25
- Engineered Mosquitoes Could Wipe Out Dengue Fever
2008-01-25
- Tulip mania - Wikipedia
2008-01-25
- Apollon: The Tree of Life Has Lost a Branch
2008-01-25
- Messenger's First Look at Mercury’s Previously Unseen Side
2008-01-16
- MESSENGER Web Site
2008-01-15
- Saudi Aramco World : What Was Jiroft?
2008-01-06
- Giovanni Battista Belzoni - Wikipédia
2008-01-04
- BBC - Science & Nature - The Lost City of Nasca
On a barren desert in South America is one of the greatest archaeological wonders of the world. Etched in the surface of the pampa are hundreds of straight lines, geometric shapes and the images of animals and birds. These are the Nasca lines, built by the Nasca people, but why they were created has defied explanation. Now archaeologists have begun to uncover the lost world of the line builders.
2007-12-27
- BBC - Science & Nature - Cahuachi: The Lost City of Nasca
Cahuachi is now revealed to have been abandoned after a series of natural disasters destroyed the city. But before they left it, the Nasca people covered the city in the arid pampa sand where, until recently, it has remained a barely visible mound in the desert.
2007-12-27
- Annals of Science: Darwin’s Surprise: Reporting & Essays: The New Yorker
Why are evolutionary biologists bringing back extinct deadly viruses?
2007-12-10
- Acoustique musicale - Wikipédia
2007-11-28
- nissaba - paleolitische en neolithische vrouwenbeeldjes
2007-11-21
- The Encyclopedia of Life and Linking Open Data » AI3:::Adaptive Information
2007-11-14
- GBIF portal: Home
2007-11-14
- Bioshare: A home page for every species
2007-11-14
- Bioshare: Home
Collaborative biodiversity portal
2007-11-14
- JAXA | Moving image of the Moon shot by the HDTV camera of the KAGUYA (SELENE)
2007-11-09
- Le Prix Nobel Albert Fert plaide pour une recherche libre
Auriez-vous décroché le Nobel avec le financement de la recherche sur projet que met en place le gouvernement ? Non, s'il n'y avait eu qu'un financement sur projet.
Je n'ai pas démarré mes travaux en me disant que j'allais augmenter la capacité de stockage des disques durs. Le paysage final n'est jamais visible du point de départ.
2007-10-25
- Common Ground - January 2004 - Percy Schmeiser vs. Monsanto by Percy Schmeiser
2007-10-23
- Percy Schmeiser - Wikipedia, the free encyclopedia
2007-10-23
- Rapport du Comité consultatif national d'éthique sur l'amendement ADN
Le CCNE attire l'attention sur la dimension profondément symbolique dans la société de toute mesure qui demande à la vérité biologique d'être l'ultime arbitre dans des questions qui touchent à l'identité sociale et culturelle. Elle conduirait furtivement à généraliser de telles identifications génétiques, qui pourraient se révéler à terme attentatoires aux libertés individuelles. Elle risquerait d'inscrire dans l'univers culturel et social la banalisation de l'identification génétique avec ses risques afférents de discrimination.
Le CCNE redoute les modalités concrètes d'application dans des réalités culturelles très différentes des nôtres. Nos concitoyens comprendraient peut-être mieux l'exacte réalité de tels enjeux s'ils étaient confrontés à des exigences analogues lors de leur propre demande de visa.
2007-10-04
- Representing Probabilistic Relations in RDF
2007-09-27
- www.com-vat.com: Génétique administrative : de Courteline à Orwell
L'introduction des tests ADN pour l'établissement d'actes administratifs n’est pas seulement contraire au droit ou au sens commun. C'est un vrai danger démocratique.
2007-09-25
- Reforestation en Pays dogon
Technique de plantation : Effectuer la plantation deuxième quinzaine de juillet afin que les arbres puissent survivre sans ou presque sans arrosage ultérieur. Il faut toutefois être très présent les premières semaines pour éviter l’assèchement au moment du repiquage. La croissance de l’arbre sera par ailleurs très influencée par les soins ultérieurs reçus par l’arbre (désherbage, paillage, arrosage, engrais). Faire un trou de 60 cm x 60 cm et 50 cm de profondeur. Mettre au fond la terre qui était au dessus et rajouter si possible du fumier. Couper la partie inférieure du pot inciser la partie latérale du pot. Insérer le pot dans le trou sans retirer le plastique. Mettre un peu de terre puis retirer le plastique. Mettre encore de la terre puis tasser fermement. Pour améliorer le taux de survie, on peut planter une dizaine de tiges de mil séchées autour du plant, ou une gaine IRRIGASC. On peut également couper un partie des feuilles pour limiter l’évapotranspiration et ne garder que la partie supérieure. Dans le même objectif, recouvrir le sol d’herbes ou de tiges de mil a pied de l’arbre (paillage). Une famille peut au maximum s’occuper de 100 arbres, étant donné qu’elle doit dans le même temps être dans les champs de mil. Si les arbres sont espacés de 10 m, la superficie forestière est donc de 100m x 100 m = 1 Hectare pour 100 arbres.
2007-09-20
- One Species' Genome Discovered Inside Another's - University of Rochester Press Releases
Bacterial to Animal Gene Transfers Now Shown to be Widespread, with Implications for Evolution and Control of Diseases and Pests
2007-09-13
- NASA - Close-Up of Iapetus
2007-09-13
- Les couilles de l'éléphant
Comédie gabonaise
"Ce n'est pas parce que l'éléphant est maigre que ses couilles ne remplissent pas une calebasse."
Une très bonne rengaine accompagne le film : "My Son", de Wasis Diop
2007-08-24
- Pillages chinois en forêt tropicale
2007-08-21
- Eight-million-year-old bug is alive and growing - New Scientist Environment
2007-08-08
- Sentient Developments: The Fermi Paradox: Back with a vengeance
2007-08-08
- jsMath Home Page
A Method of Including Mathematics in Web Pages
2007-07-09
- National Geographic News Photo Gallery: Megaflyover: Documenting Africa's Last Wild Places
Hundreds of hippopotamuses crowd into what is left of the Katuma River in Tanzania's Katavi National Park.
2007-07-08
- NOVA | Portrait of Australia's unique evolutionary history.
Why did Australia get a preponderance of pouched and egg-laying mammals? And, at the same time, precious few of the kind of mammal that dominates every other land in the world?
Today no monotremes exist outside of Australia (and New Guinea), and no placental mammals that didn't fly or swim there—for example, bats or dugongs—exist in Australia except for rodents (which arrived only about five million years ago) and mammals that were introduced by people (who arrived by 60,000 years ago).
2007-05-23
- BBC NEWS | Antarctic 'treasure trove' found
An extraordinarily diverse array of marine life (more than 700 new species) has been discovered in the deep, dark waters around Antarctica.
2007-05-20
- Biodiversity Heritage Library
Ten major natural history museum libraries, botanical libraries, and research institutions have joined to form the Biodiversity Heritage Library Project. The group is developing a strategy and operational plan to digitize the published literature of biodiversity held in their respective collections. This literature will be available through a global “biodiversity commons.”
2007-05-11
- Encyclopedia of Life
2007-05-11
- Giant crystals enjoyed perfection
With lengths over 11m, the giant gypsum crystals found in Mexico's Cueva de los Cristales are a great natural wonder.
2007-04-05
- South American Archaeology: Paleo-Indian
2007-02-26
- Steinkern.de - Die Fossilien-Community - Startseite
Des photos d'ammonites en pagaille
2007-01-19
- La Librairie des Maths
2007-01-03
- www.msf.fr : PÉTITION NOVARTIS - Un mauvais procès, une menace pour les malades des pays pauvres
2006-12-29
- A Framework for Ontological Description of Archaeological Scientific Publications
2006-12-23
- Modeling Uncertainty in Semantic Web Taxonomies
Information retrieval systems have to deal with uncertain knowledge and query results should reflect this uncertainty in some manner. We present a new probabilistic method to approach the problem. In our method, degrees of subsumption, i.e., overlap between concepts can be modeled and computed efficiently using Bayesian networks based on RDF(S) ontologies.
2006-12-06
- Minding the Planet: Minding The Planet -- The Meaning and Future of the Semantic Web
long term vision of the evolution of the web and the world by Nova Spivack, who runs a Semantic Web startup company Radar Networks. http://www.mindingtheplanet.net
2006-11-07
- PR-OWL: A Bayesian Framework for the Semantic Web
2006-11-07
- www.besthistorysites.net: Ancient/Biblical - Africa
2006-09-28
- PR-OWL: A Bayesian Ontology Language for the Semantic Web
2006-09-07
- A meeting of civilisations: The mystery of China's celtic mummies
2006-08-29
- Elémentaire, mon cher Poincaré
2006-08-29
- MANIFOLD DESTINY - The New Yorker
"It [the Fields Medal] was completely irrelevant for me” Perelman said. “Everybody understood that if the proof is correct then no other recognition is needed.”
2006-08-28
- BBC NEWS | Evolution reversed in mice
US researchers have taken a mouse back in time some 500 million years by reversing the process of evolution.
2006-08-20
- BBC NEWS | Tut's gem hints at space impact
2006-07-20
- BBC NEWS | Five new heritage sites in Africa
2006-07-20
- BBC NEWS | Science/Nature | Ancient drought 'changed history'
Scientists have identified a major climate crisis that struck Africa about 70,000 years ago and which may have changed the course of human history.
2006-07-20
- Edge: THE ENERGY OF EMPTY SPACE THAT ISN'T ZERO: A Talk with Lawrence Krauss
2006-07-20
- LiveScience.com - Live Insects Challenge Humans in Bizarre Computer Game
Remember packman? "Instead of computer code, I wanted to have animals controlling the ghosts. To enable this, I built a real maze for the animals to walk around in, with its proportions and layout matching the maze of the computer game. The position of the animals in the maze is detected using colour-tracking via a camera, and linked to the ghosts in the game. This way, the real animals are directly controlling the virtual ghosts." Crickets' tendency to flee from vibration (a sign of approaching predators) allows human players to interact with them.
2006-07-14
- New Scientist - Antimatter and dark matter are new probe's prey
A cosmic ray detector that will attempt to unlock the secrets of both antimatter and dark matter launched on Thursday. Called PAMELA, the experiment is set to spend at least three years in orbit – providing far longer coverage than the few days of data collected by previous space-based detectors.
2006-06-21
- Une colonie de cafards domptée par un mini-robot
2006-06-19
- Complex ecosystems arrived early
New studies of the Strelley Pool stromatolites in Autralia, which are more than 3.4 billion years old, suggest that they were shaped by living organisms.
2006-06-08
- BBC NEWS - The science behind the swerve
2006-06-08
- BBC NEWS | Science/Nature | Ancient fig clue to first farming
Ancient figs found in an archaeological site in the Jordan Valley may represent one of the earliest forms of agriculture, scientists report. The carbonised fruits date between 11,200 and 11,400 years old.
After examining the figs, they determined that it was a self-pollinating, or parthenocarpic, variety, like the kind we eat today. In nature, parthenocarpic fig trees appear now and again by a chance genetic mutation. But because they do not produce seeds they cannot reproduce alone - they require a shoot to be removed and replanted.
2006-06-06
- Gigantic meteor crater found in Antarctica
2006-06-06
- BBC NEWS - Unknown creatures found in cave
Eight previously unknown invertebrate creatures have been discovered in a cave in central Israel. The largest is a white shrimp-like crustacean. Another resembles a species of scorpion and is blind. The cave, near the city of Ramle, contains a lake and was uncovered during drilling at a quarry. Scientists say it is a unique ecosystem that has been sealed off from the rest of the world for five million years and could contain other ancient lifeforms.
2006-06-06
- Version grecque
"Ce roman...", (qui met en scène Voulet au moment de l'attaque du village de Sarranounia Mangou)... a fait émerger un vieux souvenir de Collège : une version grecque... où le général Brasidas, exhortait ses troupes poursuivies par les Barbares et inférieures en nombre, à se battre tout en faisant retraite.
2006-05-26
- Rapport d'information de M. Jean-Marie Rolland sur l'enseignement des disciplines scientifiques dans le primaire et le secondaire
La mission a observé, tant en France qu'à l'étranger, un tel enthousiasme à enseigner, une telle curiosité et une telle soif d'apprendre, dès lors que l'on sort des modes traditionnels de transmission des savoirs qu'elle considère que le levier du changement réside dans ces laboratoires pédagogiques qui tendent à se multiplier bien plus que dans une énième révision des programmes ou des horaires.
2006-05-26
- Debate on Little Human Fossil Enters Major Scientific Forum - New York Times
Not all scientists agree that the 18,000-year-old "little people" fossils found on the Indonesian island of Flores should be designated an extinct human-related species.
2006-05-25
- Extreme Life on Earth (California Academy of Sciences - Natural History)
2006-05-23
- California Academy of Sciences
Natural History Museum
2006-05-23
- XTech 2006: Semantic Web @ NASA
2006-05-22
- Les origines du Sida
Documentaire accusant un vaccin contre la polio, fabriqué avec des reins de chimpanzés et utilisé au Congo, d'être à l'origine de la transmission du sida à l'homme. Le film est effrayant - ce qui ne veut pas dire qu'il ait raison.
2006-05-17
- BBC NEWS - Neanderthal yields nuclear DNA
The first sequences of nuclear DNA to be taken from a Neanderthal have been reported at a US science meeting.
2006-05-16
- BBC NEWS - Salvage prospect for 'junk' DNA
A mathematical analysis of the human genome suggests that so-called "junk DNA" might not be so useless after all.
2006-05-05
- BBC NEWS - Ethiopians celebrate obelisk return
2006-05-01
- UMBC eBiquity - Publications - Probabilistic Framework for Semantic Web - OWL and Bayes Networks
2006-05-01
- BBC NEWS | 'More genes' needed to make life
2006-04-09
- Study, in a First, Explains Evolution's Molecular Advance - New York Times
By reconstructing ancient genes from long-extinct animals, scientists have for the first time demonstrated the step-by-step progression of how evolution created a new piece of molecular machinery by reusing and modifying existing parts.
2006-04-09
- BBC NEWS - Light shed on mysterious particle
Physicists have confirmed that neutrinos, which are thought to have played a key role during the creation of the Universe, have mass.
2006-04-09
- Heredia - Les Trophées - La Trebbia : L'aube d'un jour sinistre a blanchi les hauteurs
Et là-bas, sous le pont, adossé contre une arche,
Hannibal écoutait, pensif et triomphant,
Le piétinement sourd des légions en marche.
2006-04-03
- BBC NEWS - 2006 mathematics prize announced
2006-03-24
- BBC NEWS-Pentagon plans cyber-insect army
2006-03-18
- Three cosmic enigmas, one audacious answer - News | Print | New Scientist
DARK energy and dark matter, two of the greatest mysteries confronting physicists, may be two sides of the same coin. A new and as yet undiscovered kind of star could explain both phenomena and, in turn, remove black holes from the lexicon of cosmology.
2006-03-11
- Scientific American: Separation of Man and Ape Down to Gene Expression
First empirical demonstration in higher primates that evolution may often work through changes in gene regulation
2006-03-11
- Plan de BANI
Présentation de la collection de squelettes et de restes osseux de l'I.R.S.H., Institut de Recherche en Sciences Humaines de l'Université de Niamey. Développée dans le cadre du projet "Conservatoire Archéologique" financé par le Fond d'Aide et de Coopération français et mis en oeuvre par l'ORSTOM et l'I.R.S.H. Description de la plupart des sépultures préislamiques fouillées officiellement entre 1978 et 1992 dans le nord du Niger.
2006-03-06
- RFI - Abdoulaye Maga - Invité Afrique
Des statuettes, des poteries et des haches polies... Ce sont en tout 6 400 pièces archéologiques qui ont été rapatriées la semaine dernière au Niger. Ces objets avaient été exportés illégalement par des trafiquants d'art, puis saisis par les douanes françaises à l'aéroport Roissy-Charles-de-Gaulle. Qui sont les trafiquants ? Comment empêcher le pillage des sites archéologiques du Sahel ? Abdoulaye Maga, archéologue nigérien, est également directeur de l'Institut de recherche en sciences humaines de Niamey.
2006-03-06
- Hugin
2006-02-17
- NOVA | The Ghost Particle | Case of the Missing Particles | PBS
How can you look inside the sun to see how it shines? In the mid-1960s, Ray
Davis and John Bahcall thought they had a way. Drawing on advances made by
other physicists earlier in the century, they intended to use notoriously
elusive particles called neutrinos to verify ideas about the sun's inner
workings. Theorist Bahcall calculated the number of neutrinos they expected to
find, and experimentalist Davis tried to catch them. But for more than three
decades, their results didn't jibe. In the chronology below, follow the case of
the missing neutrinos, which ultimately led not only to a triumph for Davis and
Bahcall but also to a surprising breakthrough in particle
physics.
2006-02-17
- BBC NEWS | Science/Nature | Dark matter comes out of the cold
Astronomers have for the first time put some real numbers on the physical characteristics of dark matter.
2006-02-15
- The 325 Project
2006-01-30
- Sélection de liens sur Aratta - ARTE
2006-01-29
- Mésopotamie : un portail de l'Orient ancien
2006-01-29
- http://www.pbs.org/wnet/secrets/flash/catastrophe1_script.html
2005-12-19
- http://www.pbs.org/wnet/secrets/flash/catastrophe2_script.html
2005-12-19
- Stardust | JPL | NASA
On January 15, 2006, after more than 7 years and billions of miles of travel
through space, the Stardust spacecraft will finally return to Earth with some
precious cargo -- pristine samples of comet and interstellar dust.
2005-12-08
- ESA - Results from Huygens - Highlights of ESA’s Huygens mission
2005-12-01
- ESA - Results from Mars Express - Mars Express evidence for large aquifers on early Mars
2005-11-30
- ESA - Results from Mars Express - Buried craters and underground ice - Mars Express uncovers depths of Mars
2005-11-30
- BBC NEWS - Probe 'gathers asteroid material'
Scientists believe it collected the debris, but will only be sure when Hayabusa returns to Earth in 2007.
2005-11-27
- Pourquoi j'ai démissionné du Haut Conseil de l'Education - Laurent Lafforgue
2005-11-25
- International Nemrud Foundation - Word Heritage Monument in Turkey
2005-11-21
- La main à la pâte
2005-11-19
- NOVA | Einstein on Newton | PBS
2005-11-03
- NOVA | scienceNOW | Dispatches: What We're Thinking About: Keep It Very Simple | PBS
2005-11-02
- NOVA | scienceNOW | Dispatches: What We're Thinking About: What Is Life? | PBS
2005-11-02
- Main Page - Wikispecies
Wikispecies is free. Because life is public domain!
2005-10-11
- OFSET Wiki
OFSET is a community of volunteers willing to develop and to enhance free software for education.
2005-10-11
- NOVA | Einstein's Big Idea | PBS
2005-10-10
- Fortune.com: The Law of Unintended Consequences
Twenty-five years ago a law known as Bayh-Dole spawned the biotech industry. It made lots of university scientists fabulously rich. It was also supposed to usher in a new era of innovation. So why are medical miracles in such short supply?
2005-09-15
- BBC NEWS - Health - 'Proof' our brains are evolving
2005-09-12
- BBC NEWS - Concern over three-parent embryo
2005-09-12
- Secret life of RNA- Stanford Medicine Magazine - Stanford University School of Medicine
2005-09-12
- BBC NEWS - Apes 'extinct in a generation'
2005-09-05
- Questions de physique
2005-08-24
- BBC NEWS | Bulgaria unearths Thracian riches
2005-08-22
- BBC NEWS | Science/Nature | Scientists hope to ease GM fears
Most GM plants contain a gene for antibiotic resistance, but there are fears this could transfer to bacteria, making them immune to common drugs.
Researchers from Tennessee say their new method carries no such risk.
2005-08-22
- BBC NEWS | Ocean bug has 'smallest genome'
2005-08-22
- Feynman: there's plenty of room at the bottom
2005-08-17
- Chronology of Events in Science, Mathematics, and Technology
2005-08-17
- UMBC eBiquity Project: Bayes OWL
2005-07-04
- ESA Portal - Mars Express radar ready to work
2005-06-27
- Quantum computer springs a leak - Technology | Print | New Scientist
2005-06-27
- BBC - The Nebra Sky Disc
2005-06-26
- UMBC eBiquity Publication: A Bayesian Methodology towards Automatic Ontology Mapping
2005-06-15
- OutilDeterminationPlantes:SpecificationsProjets
2005-06-10
- Mission to build a simulated brain begins
2005-06-06
- Edgar Morin : Les sept savoirs nécessaires à l’éducation du futur
2005-05-27
- NASA - Voyager Enters Solar System's Final Frontier
2005-05-25
- BBC NEWS - Deep sea weapon against superbug
A bacterium found 300 metres below sea could be used to fight the superbug MRSA, scientists believe.
2005-05-25
- Ancient Egypt - Includes pyramids, pharaohs, queens, and more.
2005-05-14
- WollemiPine.com - the official home of the Wollemi Pine.
2005-05-12
- Creation of Black Hole Detected
2005-05-10
- http://mafihe.hu/~bnc/feynman/
2005-04-05
- BBC - On This Day - Space
2005-03-24
- http://learn.arc.nasa.gov
2005-03-14
- The shape of life
A revolutionary eight-part television series that reveals the dramatic rise of the animal kingdom through the breakthroughs of scientific discovery.
2005-03-07
- String theory: The elegant universe
Eleven dimensions, parallel universes, and a world made out of strings. It's not science fiction, it's string theory.
2005-03-07
- Kleenex rase nos forêts boréales !
2005-03-03
- Science (site officiel de la revue)
2005-03-03
Aliases
- http://www.semanlink.net/tag/sciences : sciences
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