Sulfide-sensing mechanisms in purple bacteria

Recent evidence demonstrates that the origins of photosynthesis can be found in deep sea hydrothermal vents, where microbes evolved to obtain energy from ejected hydrogen sulfide and methane gases. These microbes are capable ...

Half of N. American Birds in peril from climate change

Iconic North American birds like the Bald Eagle and Brown Pelican are among hundreds of mankind's feathered friends facing threats to their survival due to climate change, researchers said Tuesday.

Purple martin migration behavior perplexes researchers

Purple martins will soon migrate south for their usual wintertime retreat, but this time the birds will be wearing what look like little backpacks, as scientists plan to track their roosting sites along the way.

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