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Condors’ Comeback Imperiled By Lead Poisoning
The California condor’s return from near extinction is threatened by persistent exposure to lead-based bullets, despite intensive efforts to...
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Beyond Rio: Pursuing ‘Ecological Citizenship’
Andrew Revkin reflects on the end of the “Rio+20” United Nations Conference on Sustainable Development in his Dot Earth...
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Top Predators Key to Extinctions as Planet Warms
Global warming may cause more extinctions than predicted if scientists fail to account for interactions among species in their...
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Red List Counts ‘On the Brink’ Species
East Asia’s status as the world’s main “extinction hotspot” is confirmed in the new Red List of Threatened Species,...
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Warming, Melting Sea Ice Threaten Antarctic’s Emperor Penguins
The Emperor penguin’s future is looking bleak if global temperatures continue to rise and melt sea ice, scientists have...
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Rio+20 Deal Would Weaken Energy, Water Pledges
Governments are set to weaken pledges on boosting access to water and energy after a new draft negotiating text...
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Governments Make ‘Pitiful’ Progress on Oceans
Little has been done to protect marine life since the 1992 Rio Earth Summit, conservation scientists conclude. On pledges...
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Nations at Odds on Rio+20 Earth Summit
The final round of negotiations leading up to next week’s Rio+20 summit begins with countries very much at odds...
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Human Fingerprints on Ocean Warming Detected
Natural fluctuations alone do not explain warming in the upper layers of the planet’s oceans, confirms a new computer...
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Maybe a Cosmic Impact Wiped Out Mammoths After All
A study of rocks in Pennsylvania, South Carolina and Syria provides powerful support for the theory that a major...