The mysterious substance ripping our universe apart.

When the Earth formed, most of the gold sunk to its core—but some remained trapped inside Earth’s mantle.

Dr. Roberto Novoa of Stanford Medical School used a database of nearly 130,000 images from the internet to train a deep learning algorithm to identify skin cancers as accurately as his fellow dermatologists.

How do we program moral decision-making into autonomous vehicles?

Do black holes delete information forever? Or could information somehow escape them?

There are worlds beyond our own. A new explorer just left Earth to hunt for them.

Rana el Kaliouby is on a mission to humanize technology with artificial emotional intelligence.

Meet Dr. Rana el Kaliouby, the co-host of NOVA Wonders.

Guess which of these five unbelievable facts are real physics.

Kevin Esvelt is on a mission to eradicate Lyme disease on Nantucket and Martha’s Vineyard.

Dark energy is spreading the universe apart—what’s it mean for astronomy in the future?

Physics rarely yields finite answers, but that doesn’t deter scientists.

Theoretical Astrophysicist Priya Natarajan has loved atlases and maps since she was a little girl.

What kind of clues led to the discovery of Dark Matter and its place in the universe?

Will robots take over the world?

"It's alive!" Since Dr. Frankenstein spoke those famous words, we've been alternately enthralled and terrified by the idea of creating life in the lab. Now, a revolution in genetic engineering and thrilling innovations in synthetic biology are bringing that dream—or nightmare, as the case may be—closer to reality. New tools allow researchers to use cells to create their own DNA.

CRISPR makes gene editing faster, cheaper, and easier than ever before. Here's how.