The Volcanic Eruption Adventure

A special “tickle attack” Mailbag edition of Tumble! We’re tackling your questions about whether animals can be tickled, and why we laugh when we’re tickled. David Leavens, a professor of psychology, helps us break down the not-so-silly science of tickling. Plus, a brand NEW SONG ...  Show more

Do trees think? That’s what our listener Alden wants to know. He has an idea that scientists might study mushroom roots to find out if trees are sending messages. Is that true? And if so, what do trees have to say?!We travel deep into the forest with a young soil scientist named ...  Show more

Volcanoes have been erupting on Earth for BILLIONS of years, and they’re still creating new landscapes today! Volcanoes can seem mysterious and scary, but people all over the world have learned to live in close proximity to active volcanoes. Today we answer questions you’ve se ...

Lava is the red-hot gloop that comes pouring out of an erupting volcano. But what is it made out of? Some sort of supercharged Silly Putty? Volcano guts? Super-spicy habanero sauce? We asked geoscience grad student Kelsey Woody to help us find the answer. Got a real scorcher of a ...  Show more

The awesome, brutal power of the Krakatoa eruption, which had the explosive force of a 200-megatonne bomb, killed more than 36,000 people and cooled the entire Earth by an average of 0.6°C. Curiously, Krakatoa is not the most powerful volcanic eruption in history, but it is perh ...  Show more

At 8:32 a.m. PDT on May 18, 1980, Mount St. Helens, a volcanic peak in southwestern Washington, suffered a massive eruption, killing 57 people and devastating some 210 square miles of wilderness.Mount St. Helens is located in the Cascade Range and stood 9,680 feet before its erup ...  Show more