Scientific American Podcast: 60-Second Earth Folgen

Fifteen percent of a sample of 136 trout caught near the Great Barrier Reef showed evidence of melanoma, with UV exposure the likely culprit. Christopher Intagliata reports

A new analysis shows how the summer Olympics helped clear the air in Beijing--and combat climate change. David Biello reports

Pathologists have found the first evidence of wildlife poisoned by a cash crop--and not in a traditional agricultural area. David Biello reports