Shark Isotopes
Researchers are testing better ways to find out what sharks eat.
Artificial Dye Safety
Some people argue that food dyes are harmful to human health, but do decades of safety research back …
Condor Culture
Captive-bred California Condors lack role models to show them how to survive in the wild. But …
Baby Tooth Cavities
Baby teeth fall out eventually. But that doesn't mean cavities in baby teeth should be ignored.
Podcast for 6 December 2013
LIFE ON THE EGDE - The challenges facing endangered California Condors when they return to the wild. …
Reviving Extinct Species
Using frozen DNA, researchers have created early-stage embryos of an extinct frog.
Metal in Microwaves
If metal isn’t supposed to go in microwave ovens, why do some of them have metal racks?
3-D Underwater Microscope
Scientists are testing a new 3-D underwater microscope to study tiny marine predators.
Harmonica Colds
A listener asks if he can reinfect himself with the same cold.
Grapefruit & Medication
Grapefruit can interact in potentially dangerous ways with a variety of prescription medications.