Environmental Health Roundup
Despite looking green and attractive, many parks may actually create more pollution than they prevent.
Beyond Copenhagen
Scientists met in Washington, D.C. recently to discuss how to deal with the effects climate change is already having on critical ecosystems.
Changing Hail
A listener asks if hail changes size as it falls to the ground.
Acid Ocean Roundup
Shellfish are at risk of losing their shells due to climate change.
ET Weather Roundup
The weather on planet COROT-7b calls for pebble showers leading to a rocky downpour.
Environment Climate Roundup
A global cooling trend gets reversed by human-induced greenhouse gas emissions.
Fall Color Differences
A new hypothesis explains why fall colors differ in the U.S. and northern Europe.
Early Climate Change
Humans may have affected the Earth's climate thousands of years ago.
Podcast
CENTRAL AMERICAN CONSERVATION: Saving the Caribbean coral reef, conserving the world's largest sharks, and ancient Mayan forest conservation.
Diamonds & Extinction
What really killed North America's large mammals at the end of the last ice age?
Green Cows & Trees Roundup
Today's cows are more efficient than those of 50 years ago.
Podcast
SOUNDS & SIGNALS: Prairie dogs sound the alarm, turning bed bugs against themselves, bird songs vary by climate, and improving forensic voice comparison.
Drying Rivers
Climate change and other factors are drying up many of the world's rivers.
Rockets & Ozone
Possible increases in rocket launches could affect the Earth's protective ozone layer.
Carbon-Soaking Rocks
Certain rocks could absorb carbon dioxide emissions – if scientists can speed up the process.
Omega-3 Roundup
Omega-3 fatty acids aren't just good for your heart. They could help save the planet.
Environment Roundup
Pollution from ships poses a significant health risk to people living in coastal areas.
Giant Snake
A super-sized snake in prehistoric Colombia tells scientists about the future of global warming.
Podcast
EVOLUTION & MORALITY SPECIAL: Hunting large game led to the evolution of the conscience, and evidence of moral systems in other animals. Also: Giant snake fossil points to warmer times, and grandparents helped civilization evolve.
Emerging Infections
New global diseases are emerging faster than at any other time in human history.
Space Ornithology
Finding better ways to track migrating animals could help predict and slow the spread of disease.