Fluorescence & Phosphorescence
A listener asks: What is the difference between fluorescence and phosphorescence?
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Fruit Fly Phlebotomy
A new technique can draw pure blood from a single fruit fly.
Transitional Fossils
A listener asks: Have many transitional fossils showing evolutionary links between major groups of …
Conspicuous Camouflage
Scientists test whether predators really mistake the eyespots on the wings of some butterflies for …
Unique Genes
We inherited most of our genes from our evolutionary ancestors. But a small percentage of genes only …
Cat Domestication
A listener asks: where and when were cats first domesticated?
Snakes vs. Newts
Eating a toxic newt could kill a human, so why can some hungry snakes get away with it?
Monkey Alarms
Some monkeys combine their alarm calls to create an entirely new meaning.
People Power
A knee-mounted device harnesses electrical energy from everyday walking.
Encyclopedia of Life
A new, comprehensive repository of scientific information for all life on earth comes to the web.