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Tech companies are displaying A.I., lasers and more as they compete for a piece of President Trump's ambitious plan for a missile defense shield.

Scientists are steadily ruling out habitable conditions on the seven planets of the star Trappist-1. On one of the worlds, a nitrogen gas-rich veil remains a possibility.

A looming constitutional battle between Texas and New York is the leading edge of the escalating states' rights fight over the prescribing and mailing of abortion pills to patients in states with bans.

The bumpy snailfish, discovered 10,000 feet down off the coast of California, shows that not all denizens of the abyss are frightening.

He was only 37 when he made a discovery that challenged the existing tenets of biology and led to an understanding of retroviruses and viruses, including H.I.V.,

Some researchers suspect that rising prescription drug use may explain a disturbing trend.

Weather patterns channeling moisture into the state have led to an abundance of lightning strikes that have ignited hundreds of wildfires.

Scientists studied how the sea creatures, also known as chimaeras or ghost sharks, ended up with one of evolution's most bizarre appendages.

Chris Wright, who travels to Europe next week to promote American gas, called climate change "not incredibly important."

The upcoming U.S. Dietary Guidelines will instead be influenced by a competing study, favored by industry, which found that moderate alcohol consumption was healthy.