Recovering Reefs
Coral reefs hit hard by 2004's tsunami in Southeast Asia are recovering at a rapid rate.
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.
Mountain High
Have you ever been to a high altitude and found yourself gasping for breath? One listener asked why that happens.
Asthma’s Season
Your chances of developing asthma may be influenced by your date of birth.
Eco Plants Roundup
Researchers try a new approach to protecting tropical mangrove forests.
Mineral Evolution
Earth's diverse array of inorganic minerals is the result of biological evolution.
Nanoparticles & Skin
Nanoparticles are common ingredients in cosmetics, but scientists are finding that they're more than skin deep.
Thoreau’s Plants
Global warming has altered the composition of plants on the shores of Walden since the time of Henry David Thoreau.
Carbon Roundup
Climate change could melt the Arctic permafrost – which would release even more greenhouse gases.
Podcast
Antifreeze from fleas, silk optics for food safety, plants head for the hills, heavy metals that won't go away, and more.
Energy Roundup
New technology could yield alternative energy sources from water.
Ascending Plants
Plant species are seeking refuge from climate change at higher altitudes.
Canada Explosion
Diamonds and precious metals in the American Midwest point to a cataclysmic explosion in Canada long ago.
Solar Concentrators
New technology could make solar panels far more cost-effective.
Cloud Imaging
A flotilla of satellites will closely monitor the effects of cloud pollution on climate.
Podcast
NEWS FROM SPACE: Deflecting asteroids, catching a supernova in the act, capturing the sun in 3-D, and new names for old planets.
Amphibian Conservation
Amphibians are going extinct at an alarming rate, but zoos and aquariums have an ambitious plan to save them.
Podcast
COMPUTERS & BIOLOGY: Both bacteria and beetles promise to speed up computing, a computer game that could lead to a cure for deadly diseases, and more.
Magellan’s Weather
The climate anomaly known as El Niño could explain why the voyage of Magellan encountered an unusually calm Pacific Ocean.
Podcast
YEAR OF THE FROG - Special Extended Podcast: Zoos and aquariums tackle the amphibian extinction crisis, an amphibian missing link is found, toad tongues and frog claws, and more.