Spaceplanes seemed out of favour when the shuttle was retired in 2011; they now seem to be making a comeback.

A centuries-old experiment shows the differences between classical and modern physics. Physicists use thought experiments like this to think about how objects move both on Earth and in the stars.

The Osage murders of the 1920s are just one episode in nearly two centuries of stealing land and resources from Native Americans. Much of this theft was guided and sanctioned by federal law.

You can squash small bugs by stepping on them, but can you crush even tinier microorganisms like viruses and bacteria? It turns out that you’d need to apply a lot of pressure.

New research runs counter to conventional wisdom that says engineered surfaces can't have a strong affinity for water and also be slippery.

Harvard psychologist says pandemic worsened trend and screening, early intervention key to avoiding bigger problems.

Crashing the 1,340-pound DART probe into the small moonlet orbiting the asteroid Didymos should redirect its trajectory – and could be a model for how to save Earth in the future.

Judge Reed O'Connor ruled in a case that coverage for HIV prevention medicine PrEP violated the religious freedom of the plaintiffs. It is unclear whether the order will extend nationwide.

“Most people would be better off just drinking a full glass of water and skipping the vitamin,” says Pieter Cohen, an associate professor of medicine at Harvard Medical School.