Do I Know You? An animatronic baby Tyrannosaurus Rex gives students a close look during a preview of the Australian show Walking With Dinosaurs in Melbourne last week. Mark Dadswell/Getty Images hide caption

toggle caption Mark Dadswell/Getty Images

Nighthawks are known for their repeated "peent" call as they hunt for flying insects. Bill Bouton/Flickr hide caption

toggle caption Bill Bouton/Flickr

Scientists Tune In To The 'Voices Of The Landscape'

  • Download
  • <iframe src="https://www.npr.org/player/embed/134425597/134878553" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Richard Feynman Is The 'Quantum Man'

  • Download
  • <iframe src="https://www.npr.org/player/embed/134855903/134855878" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Drilling To The Mantle Of The Earth

  • Download
  • <iframe src="https://www.npr.org/player/embed/134855888/134855876" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Did Ancient Eruptions Form Life's Building Blocks?

  • Download
  • <iframe src="https://www.npr.org/player/embed/134855880/134855874" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Stone artifacts dating back 15,500 years suggest humans may have arrived 2,000 years earlier than previously thought. Courtesy of Michael R. Waters hide caption

toggle caption Courtesy of Michael R. Waters

Texas Find Turns Back Clock On Settlers In America

  • Download
  • <iframe src="https://www.npr.org/player/embed/134832701/134845066" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Camouflaging Red Blood Cells For Transfusion

  • Download
  • <iframe src="https://www.npr.org/player/embed/134658884/134658870" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Chernobyl's Hot Zone Holds Some Surprises

  • Download
  • <iframe src="https://www.npr.org/player/embed/134585523/134585481" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

According to Dr. Lidy Pelsser's study, 64 percent of children diagnosed with ADHD are actually experiencing a hypersensitivity to food. iStockphoto.com hide caption

toggle caption iStockphoto.com

Study: Diet May Help ADHD Kids More Than Drugs

  • Download
  • <iframe src="https://www.npr.org/player/embed/134456594/134494078" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Science Diction: The Origin Of The Word 'Clone'

  • Download
  • <iframe src="https://www.npr.org/player/embed/134459358/134459333" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Despite Long Lives, Humans Age Like Other Primates

  • Download
  • <iframe src="https://www.npr.org/player/embed/134459350/134459331" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Social Robots Raise Moral, Ethical Questions

  • Download
  • <iframe src="https://www.npr.org/player/embed/134448276/134432564" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

The FBI used a new DNA fingerprinting technology to analyze the anthrax used in the 2001 mailings. These anthrax spores can live for many years. Janice Haney Carr/CDC Public Health Image Library hide caption

toggle caption Janice Haney Carr/CDC Public Health Image Library

Lab Vs. Courtroom: Different Definitions Of Proof

  • Download
  • <iframe src="https://www.npr.org/player/embed/134367107/134384787" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript