Behind Kissing
The evolutionary roots of kissing are a bit less romantic than you might think.
Podcast
EVOLUTION SPECIAL: Celebrating Charles Darwin's 200th birthday, the evolution of kissing, mosquito love duets, robot sex, and the unhealthy history of the human diet.
C02 in Space
Astronomers have detected carbon dioxide on a planet outside our solar system for the first time.
Podcast
Astronomers discover carbon dioxide on a planet outside our solar system, clothes that could save your life, and bees on a buzz.
Electronic Cotton
Electrically conductive cotton could be used to make clothes that monitor your health.
Global Warming
A listener asks: If it's so cold outside this winter, how can we be experiencing global warming?
Little Ice Age
Widespread disease epidemics in the Americas may have set off a period of global cooling in the past.
Podcast
CLIMATE CHANGE: A listener asks: How can it be "global warming" when it's so cold outside? And the chilling effects of deadly disease on the climate of the past.
Podcast
BREATHING: Why it's harder to breathe at high altitudes, asthma and your birthdate, and more.
Podcast
Blue bananas hide in plain sight, life spurred earth's mineral diversity, boats sport manatee alarms, and more.
Blue Bananas
You might not think by looking at them that bananas are really blue.
Podcast
A car that matches your mood, is the taste of wine all in your head? Why sympathy hurts. And more.
Nanoparticles & Skin
Nanoparticles are common ingredients in cosmetics, but scientists are finding that they're more than skin deep.
Podcast
Sled dogs defy fatigue, inside the musician's brain, fooling a GPS system, and more.
Podcast
CREEPY CRAWLIES: The world's oldest ant, slave ants revolt, and a new compound found in spider venom.
Spider Venom
Scientists discover a new class of chemical compounds in spider venom.
Ethanol Bacteria
A genetically engineered bacterium produces ethanol from cellulose.
Nutrition Roundup
A naturally-occurring chemical in fruits and vegetables may help you resist the flu.