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 ...

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

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

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

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

Specialized whale-bone harpoons from southern Brazil dating back 5,000 years suggest that Indigenous groups in the area were ...

The tool helps scientists understand how single-letter mutations and distant DNA regions influence gene activity, shaping ...

New U.S. dietary guidelines promote eating full-fat foods and meats. But experts say nuts and seed oils are better sources of ...

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In mice, blocking heart-to-brain signals improved healing after a heart attack, hinting at new targets for cardiac therapy.

An ancient ancestor of spiders and relatives doubled its genome about 400 million years ago, setting the stage for the ...

These 430,000-year-old wooden tools from Greece are a rare find and provide a glimpse at the technical know-how of our early ...