A cross-section of skeletal muscle in this light micrograph shows the individual, parallel muscle fibers (red). These fibers work in concert to power movement. Thomas Deerinck, NCMIR/ScienceSource hide caption

toggle caption Thomas Deerinck, NCMIR/ScienceSource
Experimental Technique Coaxes Muscles Destroyed By War To Regrow
  • Download
  • <iframe src="https://www.npr.org/player/embed/308395528/308569858" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

False-color transmission electron micrograph of a field of whooping cough bacteria, Bordetella pertussis. A. Barry Dowsett/Science Source hide caption

toggle caption A. Barry Dowsett/Science Source
Family Tree Of Pertussis Traced, Could Lead To Better Vaccine
  • Download
  • <iframe src="https://www.npr.org/player/embed/306845814/306918632" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
'Blood Victory' In Medical Research Dispute
  • Download
  • <iframe src="https://www.npr.org/player/embed/306832661/306832662" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Writer Jeff Kluger speaking at TEDxAsheville. Courtesy of TED hide caption

toggle caption Courtesy of TED
What Makes Siblings Bond?
  • Download
  • <iframe src="https://www.npr.org/player/embed/301827286/306758196" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Psychotherapist Esther Perel says a good and committed relationship draws on the conflicting needs of security and surprise. Courtesy of TED hide caption

toggle caption Courtesy of TED
Are We Asking Too Much Of Our Spouses?
  • Download
  • <iframe src="https://www.npr.org/player/embed/301825600/306758146" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Anthropologist Helen Fischer explains how our brains behave when we're in love. Andrew Heavens/Courtesy of TED hide caption

toggle caption Andrew Heavens/Courtesy of TED
What Happens To Our Brain When We're In Love?
  • Download
  • <iframe src="https://www.npr.org/player/embed/301824760/306757890" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Amy Webb explains how she found love with some help from algorithms. Ryan Lash/Courtesy of TED hide caption

toggle caption Ryan Lash/Courtesy of TED
Can You Use Algorithms To Find Love?
  • Download
  • <iframe src="https://www.npr.org/player/embed/301822006/306757487" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Robotic Exoskeleton Helps Get Vets Back On Their Feet
  • Download
  • <iframe src="https://www.npr.org/player/embed/305545008/305671258" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
No Longer Marching Out To Work, More Mothers Stay Home
  • Download
  • <iframe src="https://www.npr.org/player/embed/305522452/305522584" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Dr. Timothy Jay says children are like "little language vacuum cleaners" that pick up whatever they hear. iStockphoto.com hide caption

toggle caption iStockphoto.com
'Like Little Language Vacuum Cleaners,' Kids Suck Up Swear Words
  • Download
  • <iframe src="https://www.npr.org/player/embed/304957688/305339595" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

This mouse egg (top) is being injected with genetic material from an adult cell to ultimately create an embryo — and, eventually, embryonic stem cells. The process has been difficult to do with human cells. James King-Holmes/Science Source hide caption

toggle caption James King-Holmes/Science Source
First Embryonic Stem Cells Cloned From A Man's Skin
  • Download
  • <iframe src="https://www.npr.org/player/embed/303658757/304186978" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

It's the Sichuan peppercorn in dishes like spicy ma po tofu that makes your mouth buzz. Researchers wanted to know if that buzz is connected to the tingling you feel when your foot falls asleep. iStockphoto hide caption

toggle caption iStockphoto
Sichuan Pepper's Buzz May Reveal Secrets Of The Nervous System
  • Download
  • <iframe src="https://www.npr.org/player/embed/290896594/304041952" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript