Earth facts

Three of the many swimmers depicted in the Cave of the Swimmers

Episode

366

Swimming in the Sahara

April 30, 2024

A Pi Day pie

Episode

359

Pi (π) Is Everywhere

March 12, 2024

The geologic clock

Episode

348

Deep Time

December 26, 2023

A container holding dry ice.

Episode

344

Our Water Supply Is Blown Away

November 28, 2023

A deep-sea fish

Episode

338

So Many Fish in the Sea

October 17, 2023

Mount Everest 3D map

Episode

337

How Tall Can Earth’s Mountains Get?

October 10, 2023

Fossil

Episode

336

Evolution Hatches the Egg

October 3, 2023

How much does a cloud weigh?

Episode

332

Puffy Clouds Weigh In

September 5, 2023

A wave

Episode

319

Invisible Forces Shape Waves

June 6, 2023

The Chandelier Ballroom in Lechuguilla Cave

Episode

315

Carlsbad Caverns

May 9, 2023

The sun

Episode

313

The Measure of a Meter

April 25, 2023

4.375-billion-year-old zircon crystal

Episode

304

4-Billion-Year-Old Time Crystals

February 21, 2023

Fjord

Episode

297

What is a Fjord?

January 3, 2023