Polar bears can struggle to adapt to climate change. Bears on Svalbard may be surviving on land prey and seals — but ...

A new artificial lung system might keep people without lungs alive for weeks. Like real lungs, tubes and pumps oxygenate ...

New research challenges the view that human life span depends mostly on lifestyle. Genes may account for half the factors ...

Pulsating remnants of stars hint at a clump of invisible matter thought to be about 10 million times the sun’s mass.

Senior writer Tina Hesman Saey is a geneticist-turned-science writer who covers all things microscopic and a few too big to be viewed under a microscope. She is an honors graduate of the University of ...