SCIENCE

Watch a Former NASA Engineer Turn Sand Into Liquid—Then Take a Dip

YouTube host Mark Rober's latest stunt involves a bubbling hot tub that's in no way actually wet.

Marathon Running Won't Undo Poor Lifestyle Choices, Study Suggests

Even if you're in great shape, you still have to ditch the cigarettes, alcohol, and fatty foods.

Prehistoric Women Were Stronger Than Some of Today's Elite Female Athletes

Who needs a gym when you haul grain and till fields all day?

What Is Infinity?

Let's try to wrap our heads around it.

Meteor Showers, a Supermoon, and the Solstice: A Guide to the December Night Sky

It's been a great year for sky watching, and the universe had a little more in store for us before 2017 ends.

The Brooklyn Public Library is Now Home to a Tiny Mollusk Museum

The vending machine-sized installation features 15 itty-bitty "exhibitions" about bivalves, snails, octopuses, and more.

Walkabout Films via Flickr // CC BY-ND 2.0

Mythical Yetis are Actually Bears, According to DNA Analysis

After testing evidence collected from the Tibetan Plateau and from museum collections, they found the biological root of the Yeti legends to be local bears.

How Hand Sanitizer Works (And Why It Isn't a Substitute for Soap)

Hand sanitizer doesn't look, smell, or feel like the stuff doctors use to clean their tools? (Or the kind we drink, for that matter.) It also doesn't physically wash dirt from your hands.

20 Years Later, James Cameron Is Using Physics to Defend Jack's Death in Titanic

The director claimed that he tested the board itself to gauge its buoyancy.

7 Fascinating Facts About the Sun

Get ready to feel small: The sun is 99.8 percent of the mass of the solar system. Here are more colossal facts about our star.

You Can Now Get Your Own Copy of the Voyager 'Golden Record'

Even Carl Sagan, who created it, was turned down by NASA when he asked for one.

This Holiday Season, Think Twice Before Tasting the Cookie Dough

There's a new warning from scientists, and it's not about the raw eggs. It's about the uncooked flour.

What is Friction?

It's not as complicated as it sounds.

10 Surprising Ways Senses Shape Perception

Things are not always as they seem.

11 Things We Learned About Hedy Lamarr From Bombshell

The actress invented a technology that would become the basis for Wi-Fi, but it wasn’t until 1990 that her accomplishments were recognized—which is the subject of a new documentary.