(This video is no longer available for streaming.) Some people avoid meat because it involves killing animals. Other people love meat; they can't get enough. Here is a development that might make both ...

(This video is no longer available for streaming.) Host Neil deGrasse Tyson joins a team of investigators hot on the trail of a mass murderer—one that knocked off its victims 250 million years ago ...

(This program is no longer available for streaming.) One of the most violent natural disasters of our time, the colossal eruption of Mt. St. Helens in 1980 blasted away an entire mountainside. Over ...

(This program is no longer available for online streaming.) Astronomers are closing in on the proof they've sought for years that one of the most destructive objects in the universe—a supermassive ...

Cosmic rays are inescapable in space. They can rip right through an astronaut, damaging DNA and possibly causing cancer and memory loss over the long-term. But recent research shows that antioxidants, ...

"The Fabric of the Cosmos," a four-hour series based on the book by renowned physicist and author Brian Greene, takes us to the frontiers of physics to see how scientists are piecing together the most ...

National Corporate funding for NOVA is provided by Carlisle Companies and Viking Cruises. Major funding for NOVA is provided by the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS ...

(This video is no longer available for streaming.) Prime numbers—those that can only be divided by themselves and one—bear a mystery. Why do primes tend to pair up? Five and seven, for example, are ...

On November 25th, 1915, Einstein published his greatest work: general relativity. The theory transformed our understanding of nature’s laws and the entire history of the cosmos, reaching back to the ...

Could a gene that doubles the lifespan of tiny worms help extend human lives, too? In Hawaii, a group of exceptionally healthy elderly men—who just so happen to share a genetic link to those ...

Water buffalo tusks, fish bladders, and animal sinew all went into the making of the ancient Egyptian composite bow. While the materials may seem primitive, this powerful weapon was not so different ...

(This program is no longer available for online streaming.) Almost a century ago, paleontologists found the first tantalizing hints of a monster even bigger than Tyrannosaurus rex, perhaps the largest ...