Health risks of nearly 10,000 chemicals charted to help predict toxicity of untested substances.
One sexually transmitted virus seems to cut HIV death rates
High-tech breeding to bolster cattle and crops against potential outbreaks is becoming increasingly urgent as diseases continue to march across Africa
Superweeds? Suicides? Stealthy genes? The true, the false and the still unknown about transgenic crops
An appeals court is set to decide on the agency's veto power to protect wildlife and habitats
Reliance on satellite data is blamed for overoptimistic estimates of the nation's forest cover
The impact on food prices is likely to be felt around the world
The world has failed to deliver on many of the promises it made 20 years ago at an Earth summit in Brazil
Some lab-bred GM mosquitoes can survive in the wild, green groups say, but the bug-maker calls that assertion 'inaccurate'