Join Smithsonian Geologist Liz Cottrell as she answers your questions about rocks, volcanoes, hiking and camping in the second season of the National Museum of Natural History’s YouTube series “The Doctor Is In.”
Find out what’s hotter than the sun, how many active volcanoes are in the United States and which national park is Dr. Cottrell’s favorite in the latest episode. Watch it below and submit your questions on YouTube.
And don’t forget to subscribe so you don’t miss the next episode on June 11!
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