Meet the Marvelous Christmas Tree Worm

Season 48

About the Episode

Instead of slithering through soil, the Christmas tree worm inhabits coral reefs and might even help protect them against destruction.

Aired: | Expires: | Runtime: 5m 20s

These cheeses are at risk of going extinct

The culprit is a lack of microbial biodiversity in the mold used to make iconic French cheeses.

1:11
First ape ever seen using medicinal plant to treat wound

After this orangutan sustained a gnarly facial wound, he did something kind of human-like.

1:58
Total Eclipse in the Heart of Texas Hill Country

People from all over the country converge on a small Texas town to see a total solar eclipse.

6:41
How to make your data more private online

You do have some control in how much data you share online.

4:02
Decoding the Universe: Cosmos Preview

Explore big discoveries that have revolutionized our understanding of the universe.

0:30
Is your phone listening to you?

It doesn’t have to – advertisers may already have all the information they want to know about you.

4:25
New map of the universe hints that dark energy may be evolving

Dark energy fundamentally shapes our universe and what astronomers know about it might be wrong.

3:00
Are winters getting less snowy?

It’s not just your imagination, winters across the U.S. are changing.

4:49
How America watched the solar eclipse

Millions witnessed the Moon cover the Sun on April 8, some viewers sent us their videos.

2:13
The Sun is way more chaotic than you think

Every now and then the sun hurls a piece of itself into the solar system.

3:59