A study of North America's only native parrot confirms its disappearance was down to humans alone.

Talks in Madrid enter their final day with serious divisions between large emitting countries and small island states

Colorado's National Eagle Repository is the only one of its kind in the world.

Aerial maps of tropical forests that show the chemistry of the canopy could shed light on how forests will react to climate change.

For critically ill children who need blood transfusions, the risk of organ failure or death is the same with fresh or older blood.

A new machine learning method is a faster way to train computers for extreme classification problems, like sorting the millions of products on Amazon.

Stimuli that sound or look like gibberish to humans are indistinguishable from naturalistic stimuli to deep networks.

"...our work in the monarch could have implications for better understanding seasonal changes in the human brain that could lead to ailments such as seasonal depression."

New resarch suggests doctors need to check young patients who have had surgery for depression and anxiety, which can have a negative effect on recovery.

"The best-case scenario is that we have rapid and widespread reduction of greenhouse gas emissions in the near term, the next 20 years. The corals in the Gulf of Mexico are hardy."