Guinea Pigs
A listener asks why guinea pigs aren't often used as laboratory animals anymore.
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Frogs Fight Disease
Some frogs produce chemicals that could be used to treat human diseases.
Compact Fluorescent Lightbulbs
The amount of mercury in a CFL bulb does not pose much of an environmental hazard.
Sports Drinks
Sports drinks are so acidic that they wear down tooth enamel – and brushing can worsen the …
Grandparent Advantage
Grandparents may have helped the human population expand.
Space Ornithology
Finding better ways to track migrating animals could help predict and slow the spread of disease.
New Energy
A Nobel laureate says the key to solving the energy crisis is to take bold, risky steps and seek …
Amphibian Conservation
Amphibians are going extinct at an alarming rate, but zoos and aquariums have an ambitious plan to …
Archaeological Digs
A listener asks: When archaeologists uncover ancient cities, why do they have to dig so deep?