Snapping turtles finding refuge in urban areas

Snapping turtles are surviving in urban areas as their natural habitats are being polluted or developed for construction projects.

First human brain-to-brain interface

Brain signal sent via the Internet from one researcher controls the hand motions of a fellow researcher.

More photos and update on California’s Rim Fire

As of August 28, the fire is 20% contained. Thousands of firefighters are still battling the blaze, which has burned 184,481 acres near Yosemite National Park.

Authenticating the world’s most expensive coffee

Coffee cherries eaten by palm civets create the world's most expensive coffee. But blatant forgeries use beans that have never seen a civet's insides.

Monarch butterfly habitat in Mexican forests at 20-year low

Climate change and illegal logging in Mexican forests, where the monarchs spend the winter, may be contributing the decline of monarch butterflies.

More people, more air pollution

But the population-pollution relationship is not the same everywhere.

Computer can read letters directly from the brain

A new method of analyzing MRI brain images enables researchers to determine which letter a test subject was looking at.

Twitter data takes snapshots of mood of New York City

On the whole, tweets are most positive near public parks like Central Park. They're most negative near transportation hubs such as the Brooklyn Bridge and the airports.

Nevada rock carvings may be oldest in North America

Rock carvings in western Nevada could be the oldest known North American petroglyphs, perhaps as much as 14,800 years old.

6.5-magnitude quake, many aftershocks, strike New Zealand

Disruptions in transportation and cracks in buildings. No serious injuries reported so far. Many strong aftershocks.