Alongside the Space Race, the mid-1900s saw another contest of engineering -- a race downward, into the Earth. Learn why the USSR created the Kola Superdeep Borehole (the deepest artificial or natural hole we know of), what we learned from it, and how this research continues in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/engineering/civil/kola-superdeep-borehole.htm

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Canning foods preserves them, but the texture and nutritive value can suffer -- and what about the potential dangers of BPA and botulism? Learn what's true and what's myth when it comes to canned food in this classic episode of BrainStuff, based on this article: https://recipes.howstuffworks.com/canned-food-bad.htm

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Iron processing is a benchmark of civilization for good reason -- this metal makes a lot of technology possible. Learn about the history and science of refining iron and steel in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/iron.htm

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In the mid-1900s, Dorothy Kilgallen was a famous journalist and popular media personality -- but her investigation into the deaths of President Kennedy and his assassin, Lee Harvey Oswald, may have gotten her killed, too. Learn about the alledged organized crime coverup Kilgallen was looking into in today's episode of BrainStuff, based on this article: https://history.howstuffworks.com/historical-figures/dorothy-kilgallen.htm

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There were many factors that led to the depth and length of the Great Depression, but some of these mistakes are being repeated today. Learn what historians and economists are saying we should watch out for in this classic-but-relevant episode of BrainStuff, based on this article: https://history.howstuffworks.com/american-history/great-depression.htm

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Pretty much every human has thousands of microscopic mites living in the hair follicles on their face, feeding off of the dead skin cells and oils there. Learn why you probably shouldn't worry about Demodex mites in today's episode of BrainStuff, based on this article: https://health.howstuffworks.com/human-body/systems/eye/are-there-really-arachnids-living-in-my-eyelashes.htm

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Instead of putting a pan on a source of heat (like a gas burner or electric element), an induction cooktop creates heat in the pan itself thanks to the principles of electromagnetism and resistance. Learn how it works -- plus the pros and cons of the technology -- in today's episode of BrainStuff, based on this article: https://home.howstuffworks.com/induction-cooktops.htm/printable

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