What would happen to the global climate after a nuclear war between India and Pakistan? Study says the planet would be dark and cool for 10 years. How much would food production decline?

Hurricanes, disease and heat deliver another body blow to Caribbean coral reefs — the centers of biodiversity, fish nurseries and guardians of shorelines. Must we kiss coral goodbye?

Where do sea turtles go when they swim in the sea? New information from West Africa shows a complex pattern of migration and gives clues about how to conserve these ancient mariners.

Global warming is changing the planet: Antarctica is melting, sea level is rising, oceans are turning sour. Killing Amazon forests spreads malaria, reduces rainfall. How sick is our Earth?

Land use: When it changes, so does the climate! The plow and the thermometer: What relationship?

Could something as simple, cheap and natural as a forest protect a coastline from a tsunami’s titanic wave? It’s looking that way…

What are the health effects of low-level radiation? How much cancer results from a small dose increase? If the hazard is small, are we wasting money on radiation protection? Lessons from Hiroshima and Chernobyl.

Don’t leave any goodies behind at the crime scene. Collect the bugs. Collect the maggots, and don’t forget to collect the ransom note. Forensic science — it’s better than you think!

Farms release airborne, drug-resistant bacteria, and indoor air could be making you sick. More news about the particles we breathe every day.

New shark repellent tested. How common are shark attacks? Meet the social shark. Learn why some people are fascinated by this cold-blooded killer.