humans

President Franklin D. Roosevelt used radio to deliver his Fireside Chats to people across the United States.

Episode

434

History of Radio

August 19, 2025

Fairy Chimneys have served as homes for centuries.

Episode

429

Lost Underground City

July 15, 2025

Dr. Larry Barham, from the University of Liverpool in the United Kingdom, works on the excavation of the tree trunk found alongside a wedge (object b in the following figure) dated at around 476,000 years old.

Episode

412

The Wood Age

March 18, 2025

71,000 BCE bifacial silcrete point found at the Blombos Cave in South Africa.

Episode

398

Earth’s First Geologists

December 10, 2024

A peek through a "skylight" into the interior of an active lava tube on the south flank of the Kīlauea Volcano on Hawai‘i’s big island in the early 1970s.

Episode

395

Living in Lava Tubes

November 19, 2024

A ball python

Episode

392

Python Protein

October 29, 2024

A new graduate indicates success with two thumbs up

Episode

387

Opposable Thumbs Up!

September 24, 2024

Jakarta

Episode

354

Cities Are Sinking

February 6, 2024

A waitress serves a traditional beer

Episode

334

What Did We Domesticate First?

September 19, 2023

White Cliffs of Dover

Episode

318

Britain’s Stone Age Mines

May 30, 2023

Moai at Rano Raraku

Episode

310

Easter Island Egg Hunt

April 4, 2023

Large four-wheel drive pickup wrapped around a utility pole

Episode

309

Twister Myths

March 28, 2023

Rough opal

Episode

301

Outback Opals

January 31, 2023