Hey man, that's sensitive: Mike Napoli of the Boston Red Sox pulls teammate Jonny Gomes' beard after hitting a three-run homer in Game 4 of the 2013 World Series in St. Louis. Jamie Squire/Getty Images hide caption

toggle caption Jamie Squire/Getty Images
Chris Hadfield's Lessons from Life in Orbit
  • Download
  • <iframe src="https://www.npr.org/player/embed/242356999/242356992" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Einstein's Real Breakthrough? Quantum Theory
  • Download
  • <iframe src="https://www.npr.org/player/embed/242356997/242356990" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
To Learn How Your Camera Works, Try Building One
  • Download
  • <iframe src="https://www.npr.org/player/embed/242356995/242356988" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Hurricane Sandy Recovery, One Year Later
  • Download
  • <iframe src="https://www.npr.org/player/embed/242356993/242356986" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
James Duncan Davidson/TED
Can You Smile Your Way To Success?
  • Download
  • <iframe src="https://www.npr.org/player/embed/240817359/240780686" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Ryan Lash/TED
Is Having Grit The Key To Success?
  • Download
  • <iframe src="https://www.npr.org/player/embed/240779578/240779774" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Friend Or Foe? Scientists say dogs react differently to the direction of another dog's tail wag. Time & Life Pictures/Getty Images hide caption

toggle caption Time & Life Pictures/Getty Images
The Tail's The Tell: Dog Wags Can Mean Friend Or Foe
  • Download
  • <iframe src="https://www.npr.org/player/embed/242126859/242277321" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Cattle crowd inside a feedlot operated by JBS Five Rivers Colorado Beef in Wiley, Colo. John Moore/Getty Images hide caption

toggle caption John Moore/Getty Images
Are Farm Veterinarians Pushing Too Many Antibiotics?
  • Download
  • <iframe src="https://www.npr.org/player/embed/240278912/242277323" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

A test field of sorghum outside Manhattan, Kan., planted by Kansas State University. Dan Charles/NPR hide caption

toggle caption Dan Charles/NPR
Heat, Drought Draw Farmers Back To Sorghum, The 'Camel Of Crops'
  • Download
  • <iframe src="https://www.npr.org/player/embed/231509864/242150647" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Workers in protective suits hold dummy munition during a demonstration at a chemical weapons disposal facility in Muenster, Germany, on Wednesday. Philipp Guelland/AFP/Getty Images hide caption

toggle caption Philipp Guelland/AFP/Getty Images
Burn, Bury Or Scorch? Why Destroying Syria's Chemical Weapons Is Hard
  • Download
  • <iframe src="https://www.npr.org/player/embed/241838750/242028447" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript