Earth
- Humans
Toxic yes: Toxins? No
Yet another news story baits us with the promise of reading about noxious toxins – and doesn't deliver.
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- Earth
Howdy, neighbor!
About 800 million years ago, East Antarctica, now one of the coldest regions on Earth, abutted what is now Death Valley, Calif., one of the hottest.
- Ecosystems
Aspiring to Save the Planet
The failure of the G-8 Summit to put some teeth in greenhouse-gas limits suggests it may be time for a global climate czar.
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- Agriculture
Farm life turns male toads female
A detailed inventory of toads in Florida finds that, as land becomes more agricultural, more cane toads resemble females both inside and out.
- Agriculture
Fishy Data on Weed Killer
A popular weed killer can feminize wildlife by tinkering with a gene that indirectly affects the production of sex hormones.
- Science & Society
Climate Threatens Living Fossil
Thanks to global warming, within the lifetimes of certain reptiles in the South Pacific, all members of their species could be born male.
- Earth
Precious little gems
Ancient microdiamonds embedded inside ancient zircons found in western Australia suggest that life may have existed on Earth up to 4.25 billion years ago.
- Climate
EPA asks: Could you drive less?
Gas prices may need to climb more before most of us do the right thing.
- Animals
Live fast, die young
With a lifespan of just five months, the chameleon Furcifer labordi leads a briefer life than any other land-dwelling vertebrate.
