Weizmann Institute study finds genetics may account for about 50 percent of human lifespan, more than double previous estimates.

Snakes have lost the gene that encodes ghrelin, a hormone that helps regulate hunger in many vertebrates, according to a new study.

A new study found that subtle differences in an animal’s behavior by midlife can predict how long it is likely to live.

Understanding what depression is – and what it is not – is often the first step toward relief.

Inside the growing scientific quest to understand what creatures with the extraordinary ability to defy the ravages of time can teach us about making human aging better.

FOR decades, African scientists have contributed essential data to global scientific research. Increasingly, however, they are no longer just contributors. Across the continent, researchers are ...

March 13, 2026 - PBS News Hour full episode. 3/13/2026 \| 57m 46s Video has Closed Captions \| CC. March 13, 2026 - PBS News Hour full episode. Friday on the News Hour, the war with ...

New research suggests the erectile dysfunction drug Viagra could help treat a devastating neurological disorder that ...

A new scientific study suggests genetics may play a far larger role in determining human lifespan than previously thought.

For decades, scientists have recognized that human immunodeficiency virus (HIV) is a formidable viral pathogen. After years of probing work and extensive experimentation, a Yale research team has ...

A new University of Utah-led study has discovered the mechanism behind a decades-old evolutionary mystery-how "selfish chromosomes" cheat the rules of genetic inheritance.

Genetically modified probiotic yeast S. boulardii can prevent bloodstream infections, making it safer for immunocompromised patients, including the elderly and infants.