Home | EarthDate

The extremely pungent odor of skunk spray is the result of a class of chemical called thiols, which are also known as mercaptans.

Episode

440

Sulfur Stinks

September 30, 2025

A studio portrait of Louis Pasteur (1822-1895).

Episode

439

Pasteur’s Rabies Vaccine

September 23, 2025

The Chinese goddess Chang’e

Episode

438

Chinese Moon Missions

September 16, 2025

A tardigrade (Paramacrobiotus craterlaki) in moss.

Episode

437

Indestructible Water Bears

September 9, 2025

In the early days of quantum computing, IBM researchers developed this device with four qubits—the fundamental units of quantum processors.

Episode

436

In Two Places at Once

September 2, 2025

Underbrush is ablaze during a controlled burn in a young pine forest.

Episode

435

Trees Hold Their Breath

August 26, 2025

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

A family of sperm whales move effortlessly through the water.

Episode

433

Whale Words

August 12, 2025

A depiction of how Earth might look if it had rings.

Episode

432

Did Earth Have Rings

August 5, 2025

Plastic pollution covering Accra beach in Ghana.

Episode

431

Ocean Plastic Pollution

July 29, 2025

A glacier flows through a section of the McMurdo Dry Valleys in Antarctica.

Episode

430

Antarctic Dry Valleys

July 22, 2025

Fairy Chimneys have served as homes for centuries.

Episode

429

Lost Underground City

July 15, 2025

An ant in Baltic amber.

Episode

428

Frozen in Time

July 8, 2025