NOVA

Since it explored Pluto in 2015, the New Horizons spacecraft has been zooming toward NASA’s most distant target yet. Join the mission team as the probe attempts to fly by Ultima Thule, an object 4 billion miles from Earth.

Einstein called it “spooky action at a distance,” but today quantum entanglement is poised to revolutionize technology from computers to cryptography. Physicists have gradually become convinced that the phenomenon—two subatomic particles that mirror changes in each other instantaneously over any distance—is real.

Journey to Hawaii's Kilauea volcano, which sent rivers of lava through communities and into the sea when it erupted in 2018. A group of scientists and locals investigate the spike in volcano activity that turned paradise into an inferno.

New archeological evidence sheds light on the stunning engineering of the Great Pyramid of Giza.

With new technologies, NASA and private companies are promising a new renaissance in space travel.

In the shadow of Vesuvius and Pompeii, a lesser-known volcano puts the city of Naples at risk.

Scientists, engineers and political leaders devise a plan to save the Dead Sea, whose levels have declined by more than 65 feet since 1976.

Scientists try to determine the cause for the increasing megafire threat by exploring the physics of fire, how firestorms move and travel and by analyzing aerial drone and satellite data to catch fires before they start.

Canadian anthropologist Niobe Thompson travels to sites in Kazakhstan, genetics labs in Denmark and anthropology museums in Russia to unlock mysteries surrounding the first riders of wild horses.

The rocky planets Mercury, Venus, Earth and Mars all have similar origins, but only one supports life.

How Leonardo da Vinci used science to create his legendary artwork. Included: why Mona Lisa's smile is so captivating—and what it took to create it.

Is violence actually declining? If so, why? And can we build a more peaceful future?

Camera technology is revolutionizing the study of animals—without them even noticing.