For the first time, scientists have shown that hummingbirds can sing and hear in pitches beyond the known range of other birds, according to research published Friday in the journal Science Advances.

For centuries, scientists have obsessed over a primordial blob that can shape-shift, clone itself, and live indefinitely.

Rutgers University researchers have received U.S. government clearance for the first saliva test to help diagnose COVID-19, a new approach that could help expand testing options and reduce risks of infection for health care workers.

Why aren’t health officials warning people about eating food contaminated with the new coronavirus? The answer has to do with the varying paths organisms take to make people sick.

Women who use certain types of hormones after menopause still have an increased risk of developing breast cancer nearly two decades after they stop taking the pills, long-term results from a big federal study suggest.

The first attempt in the United States to use a gene editing tool called CRISPR against cancer seems safe in the three patients who have had it so far, but it’s too soon to know if it will improve survival, doctors reported Wednesday.

Beneath the surface of one of Germany’s deepest lakes, researchers are studying the hidden effects of artificial light.

When researchers at the University of Kentucky compare brains donated from people who died with dementia, very rarely do they find one that bears only Alzheimer’s trademark plaques and tangles — no other damage. That hard-won lesson helps explain how scientists are rethinking Alzheimer’s.

New research gives some biological clues to why women may be more likely than men to develop Alzheimer’s disease and how this most common form of dementia varies by sex.

A healthy lifestyle can cut your risk of developing Alzheimer’s or other forms of dementia even if you have genes that raise your risk for these mind-destroying diseases, a large study has found.

Government scientists are starting to peek into the brains of people caught in the nation’s opioid epidemic, to see if medicines proven to treat addiction, like methadone, do more than ease the cravings and withdrawal.

Nearly 40 years after it was found by a monk in a Chinese cave, a fossilized chunk of jawbone has been revealed as coming from a mysterious relative of the Neanderthals.