Brainstuff

The massive, historic Liberty Bell wasn't always cracked, and wasn't always named that. Learn what history knows (and doesn't know) about the Liberty Bell in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

What we now call grandfather clocks were around for a long time before they got that name. Learn how a pop song renamed them -- and a few legends that may have inspired the song -- in this classic episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

The Tyrannosaurus rex was a giant predator, but its arms weren't much bigger than a human being's. Learn a few hypotheses about T. rex's arms in this classic episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Coal fires have burned beneath this Pennsylvania town for decades, driving away inhabitants with continual smoke, ash, and cave-ins. Learn how coal-seam fires work in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Real vanilla is much more expensive than synthetic vanilla. Learn about the delicate orchid that vanilla comes from and why most vanilla flavoring is synthetic in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

A new bill aims to make Washington, D.C. the U.S.'s 51st state -- but why wasn't it created as a state to begin with, and why have similar bills failed in the past? Learn the history of the District of Columbia in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

The hellbender salamander isn't nearly as scary as it sounds. Learn why they're mostly harmless -- and some of their populations are in danger -- in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

The 'Streisand Effect' is when some powerful entity tries to repress information, but winds up publicizing it instead. Learn the history of the term and how the effect works in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

All humans eventually develop bags under our eyes -- but why? Learn how it happens -- and about some inexpensive, unobtrusive home remedies -- in this classic episode of BrainStuff.​ Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

There's a distinct accent of yesteryear that's not quite British, and not quite American – so what gives? Learn about the Transatlantic accent, or Mid-Atlantic accent, in this classic episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

The Tulsa Race Massacre of 1921 is the worst incident of interracial violence in U.S. history, yet it wasn't discussed for decades, and historians are still unearthing its details. Learn why, and what we do know about it, in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Carmine is a vibrant, long-lasting red dye that's extracted from crushed cochineal insects. Learn about the intriguing history and modern use of carmine in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Nailing down what makes a continent a continent is a surprisingly tricky business. Learn more about how we humans have defined landmasses, past and present, in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Dr. Ignaz Semmelweis asked fellow 19th-century doctors to wash their hands between conducting autopsies and delivering babies -- and was ridiculed for it. Learn how he and other sanitation pioneers helped save lives anyway in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

In commensal biological relationships, one organism benefits from another's work without harming (or, often, even alerting) the worker organism. Learn more about commensalism in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Spoiler Alert: Yep, dry cleaning isn't dry. Instead, it uses a petroleum solvent in place of water. Learn more about dry cleaning in this classic episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Water is made up of hydrogen and oxygen, but in a form that we can't breathe. Learn more about how water works in this classic episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Juneteenth is a holiday celebrating Black American independence and commemorating the ongoing struggle for equality. Learn the history of Juneteenth in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Preference for using one hand over the other is both genetic and learned during childhood -- but can we change that later in life? Learn about how handedness and ambidexterity work in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Though it started as an obscure legal term, intersectionality has become the matter of some debate. Learn what it means and how it can help everyone out in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.