Condor Culture
Captive-bred California Condors lack role models to show them how to survive in the wild. But …
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Baby Tooth Cavities
Baby teeth fall out eventually. But that doesn't mean cavities in baby teeth should be ignored.
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.
Gluten-Free Foods
Gluten-free diets are all the rage, but only a small portion of the population is truly sensitive to …