The Volcanic Eruption Adventure

Who invented the peanut butter and jelly sandwich? And how did it become one of the most famous lunches in America? In this episode, a question from listener Leila sends us on a trip through history to find out how peanut butter, jelly, and sliced bread came together to make the ...  Show more

Why do humans usually have five fingers on each hand? And what if one day, we could grow a new finger if we lost one? In this episode, a question from six-year-old listener Ayla sends us on a journey from tiny developing embryos to one of the most amazing animals on Earth: the ax ...  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