Jesse Emspak

The U.S. Navy's recent demonstration of its new laser weapon, designed to blast enemy drones out of the sky, proves that these systems no longer solely exist in the world of science fiction.

For some skywatchers, the upcoming total solar eclipse is an opportunity to duplicate one of the most famous experiments of the 20th century.

During a race with a great white shark, decorated athlete Michael Phelps will sport a special monofin that should mimic a shark's tail. But how much will it help?

In a new study, brain scans taken during a strategy game reveal how people strategize about what they think their opponent will do.

The world's largest atom smasher, the large hadron collider, has uncovered a long-predicted type of heavy particle, known as the Xi-cc, which is made up of two charm quarks.

A source of mysterious radio signals could be from a passing comet, but astronomers are skeptical.

The vacuum of empty space may be roiling with energy that drives the expansion of space itself, a new hypothesis proposes.

If you cut the leg off a salamander, it grows back. Humans, however, can't manage the trick. The reasons are far from simple, and to some extent are still a bit of a mystery.

In the year 1 million, humans might still exist — but they won't be like humans today.

Twenty years ago, IBM computer Deep Blue beat the world's greatest chess player in a first for machines. How far has artificial intelligence come since then?

Laser printers that "sculpt" images at miniscule scales could one day make color photos that don't fade over time the way ink does, according to a new study.

One of the still-unsolved mysteries about Earth's history is how the planet became breathable. Now, scientists say the culprit may have been the giant rock slabs that make up Earth's outer shell.

Physicists try to catch atoms in the elusive double-beta decay, which could tell us why there's anything here at all.

An Einstein letter shows a generous spirit and a little criticism.

In this wonky, non-Euclidean universe, the floor can fall away from your feet as you walk forward and distances aren't what they seem.

Though Trump's claims are unsubstantiated, they have raised questions about how such technology really works.

IBM's Watson may be most famous for winning at the game show "Jeopardy!" but from an office here in Manhattan, the celebrated computer's brains are being used to tackle even bigger challenges.

Matter and antimatter should look the same. For the first time, physicists have experimental evidence that they don't.

For the first time, scientists have seen the exact locations of more than 23,000 atoms in a particle that's small enough to fit inside the wall of a single cell.

Scientists have proposed a new way to build a quantum computer using microwaves to control individual atoms, and they say the new method offers a blueprint for a more useful computing machine.