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.