How Do We Define the Kilogram?

In South Carolina, the first school for formerly enslaved people during the Civil War shifted to become a center for social activism during the Civil Rights movement, and stands today as a landmark of African American culture and history. Learn more about the Penn Center in this ... Show More

Cramming for a test or other deadline may give you decent short-term results, but research shows it sacrifices long-term comprehension and memory. Learn why study methods like spacing and interleaving are better in this classic episode of BrainStuff, based on this article: https: ... Show More

Over a few hundred years, real stories about secretive agents developed into the legend of the ninja. Learn how this myth captured the world's imagination -- and about the work being done at the world's first International Ninja Research Center -- in this episode of BrainStuff, b ... Show More

<p>In this episode of Stuff Mom Never Told You, Molly and Cristen take a look at current ways of measuring obesity. They discuss the most common formula, Body Mass Index (BMI), in detail, from its origins to its flaws.</p><p> </p> Learn more about your ad-choices at <a href="http ... Show More

Daniel and Jorge talk about the history of how we measured this fastest of all velocities! Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information. 

Daniel and Jorge talk about the number that controls the strength of gravity and why it's so hard to measure.See omnystudio.com/listener for privacy information. 

Daniel and Jorge explain how we might be able to listen to a new kind of gravitational hiss and what secrets it could reveal. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.