Plancton – Aux origines du vivant, de Christian Sardet – Editions Ulmer, 13 octobre 2022 – 216 pages et 500 photos Rendre visible l’invisible et nous en révéler l’extraordinaire beauté, tel est l’objectif premier de ce livre. L’auteur, Christian Sardet, directeur de recherche au CNRS, est un spécialiste du plancton,
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Plusieurs missions sont à la recherche de la vie sur la planète rouge. Mais reconnaîtrions-nous les extraterrestres si nous les trouvions ? Car la vraie question à laquelle se heurtent tous les exobiologistes est celle de la définition de la vie. On ne peut chercher quelque chose si on n’a
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Sept mois de voyage spatial, des décennies de travail et des milliards de dollars pour répondre à une seule et unique question : la vie a-t-elle un jour existé ailleurs que sur Terre ? La quête de la Nasa culmine ce 18 février avec l’atterrissage sur Mars de son dernier
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Pour mieux comprendre les contradictions des mesures sanitaires de confinement, faisons un peu de philosophie en distinguant « vie » et « existence ». Attention, cette opposition n’est pas ontologique mais éthique, il ne s’agit surtout pas de la différentiation âme-corps ou nature-culture. Pour sauver des vies, l’Etat impose à tous l’aliénation de son
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What's a life worth? The question has been on the minds of philosophers, but it is also a debate that has been stirring economists for decades, and which is being revived by the prospect of deconfinement, synonymous with the trade-off between deadly risk and economic or social devastation. Questioned on May 6, as the pandemic
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The Earth is much more alive than we thought: a rich intraterrestrial ecosystem living in the depths of the Earth has been discovered. It's almost twice the size of all the world's oceans. Despite the extreme heat, lack of light, minute nutrition and pressure
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They're big bugs, unusually big for viruses. So huge, it's a wonder they could be under the radar of scientists until... 2013. The first "pandoravirus" was spotted on a beach in Chile. Then things accelerated and we started to find one...
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NASA has just announced in a special press conference, held Thursday at 8 p.m. (French time), that it has discovered complex organic molecules and methane, all of which are linked to life, on Mars. This is important news, even if life, past or present, even microbial life, has not yet been discovered.
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In 1998, two meteorites containing a fascinating mixture of chemicals crashed to Earth. They were piously preserved for years without anyone knowing what was in them. But today, based on a new analysis made possible by the most sophisticated equipment available today, scientists are able to determine whether or not the meteorites are still alive.
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Over the last ten years, the rate of discovery of exoplanets has increased dramatically. Today, even Google's artificial intelligence is involved. With each new discovery announcement, the question that immediately arises is: when will we be able to explore these distant worlds? And the second question that immediately comes to mind
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There is a tendency to oppose the artificial and technological world of algorithms to the natural and biological world of life. And yet, nowadays, algorithms have become indispensable for studying the complexity of living things. Hence the growing importance of computer tools, exacerbated by the proliferation of data: witness, sequencing
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Since the death of the dinosaurs, life on Earth has never known such deadly pressure. We have indeed entered what scientists call the sixth great extinction. And humans may well be among the victims, according to a recent study. An extinction like this means the loss of one of the world's most important
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3.7 billion years! This is the age of life on Earth, revealed by the discovery of mineral concretions formed by bacteria found at the bottom of the ice. Australian geologists have just discovered traces of microbial activity in Greenland dating back 3.7 billion years, or 200 million years.
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The Ministry of the Environment opened its doors last night to two sacred monsters of philosophy: Edgar Morin and Patrick Viveret. In a debate moderated by Gilles Bœuf, professor at the Collège de France, and punctuated by the charm of the young playwright David Wahl, only one question was asked: "Is the man
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The question goes beyond science, it is of a philosophical, metaphysical nature. Man has always asked himself: How did life appear on our planet? What are the ingredients and the recipe that made it possible for something that will become a living being to gush out of the great cauldron?
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