Many blacktip reef sharks in French Polynesia are commonly fed by tourists. But the low-quality diet is changing the sharks’ behavior and physiology.

Men have two birth control options: condoms and vasectomies. Why has it taken so long to develop more contraceptives?

After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.

A recent flurry of executive orders and surprise actions by the Trump administration have roiled WHO, the CDC and the international public health community.

Casarabe people grew the nutritious crop year-round on savannas thanks to networks of drainage canals and ponds.

Samples from NASA’s OSIRIS-REx mission show the asteroid Bennu had organic molecules and minerals and possibly salty water and other life ingredients.

Death by heartbreak doesn't just happen in stories. In real life, severe stress can cause the sometimes-fatal takotsubo syndrome.

Found in a roughly 350-year-old manuscript by Dutch biologist Johannes Swammerdam, the scientific illustration shows the brain of a honeybee drone.

Bats may broadcast their personalities to others from a distance, new experiments suggest, which could play into social dynamics within a colony.

Weather data show how humankind’s burning of fossil fuels made the hot, dry, windy weather more likely, setting the stage for the Los Angeles wildfires.

Mapping fish migration routes and identifying threats is crucial to protecting freshwater species and their habitats, ecologists argue.

Cricket frogs were once thought to hop on the water’s surface. They actually leap in and out of the water in a form of locomotion called porpoising.