From Conservation to Population, a New Look at Planet Earth
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Can nine billion humans survive and try to improve their lives without depleting the planet?
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It is becoming clear that the human genome responds to changes in diet, even though it takes many generations to do so.
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By Andrews, Richard N L  In 2005, the United Nations-commissioned Millennium Ecosystem Assessment reported that over the past 50 years, rapid and extensive change in human ecosystems has resulted in a substantial and largely irreversible loss in the diversity of life on Earth.
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An environmental group says earth&#39;s people are using up the planet faster than it can restore itself and the west is the chief culprit.
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Unraveling the genetic map of diatoms -- microscopic sea creatures -- could pay big dividends in defending the world's ecological systems. By Kristen Philipkoski.
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The complexity of life took    billions of years to push and stretch and reshape the biological niche that    is Earth. It would seem prudent Â if one had the means Â to save some portion    of the blueprints of this majesty, so that the process would not have to start    over from scratch in the event of a global cataclysm.
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More than 15,000 species, from sharks to frogs to fir trees, are facing extinction and the total is rising faster than ever before.
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Science & environment: Britons know that the planet is heating up - but are still not ready to change their lifestyle
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The number of threatened species on the planet is increasing at unprecedented rates across almost all major animal groups, according to the most comprehensive evaluation of the worldâs biodiversity ever undertaken.
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The World Wildlife Fund (WWF) has released Living Planet Report 2004âthe current edition of an annual index that tracks global species abundance and human use of natural resources.
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If everyone on Earth generated the 20 tons of carbon dioxide emitted by each United States citizen yearly, the global tally now would be 134 billion tons a year, instead of 29 billion. That's a lot of billions.
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Conservationists concerned about the extinction of plants and animals may be overlooking the danger to thousands of other species that depend on the threatened ones.
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NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earthâs climate close to critical tipping points, with potentially dangerous consequences for the planet.
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Astronomers describe a planet orbiting a star near the end of its life - a vision, perhaps, of Earth's future.
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9 P.M. (CNN) PLANET IN PERIL In this two-part, four-hour documentary, Anderson Cooper, Dr. Sanjay Gupta and Jeff Corwin travel to some of the most remote places on Earth to examine four key issues affecting its future: climate change, vanishing habitats, disappearing species and human population growth. Segments delve into illegal wildlife trading in Southeast Asia, deforestation in Brazil, the perils facing species like polar bears and wolves, the retreat of the ice sheet in Greenland, population control in China and the disappearance of Lake Chad in Central Africa and the Carteret Islands in the South Pacific. Part 2 of the special will be shown tomorrow night at 9.
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The scale of the extinction threat facing animals and plants is made clear in the latest Red List from the IUCN-The World Conservation Union.
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GLAND, Switzerland An environmental group says earth&#39;s people are using up the planet faster than it can restore itself and the west is the chief culprit.