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Many forests in the American West have evolved with fire, and actually benefit from the occasional wildfire. But researchers are finding that trees that once would survive and thrive with small fires are now losing their ability to do so.

Researchers are getting clues about the human life cycle from studying the death of tiny worms, which internally release a blue fluorescent dye in the waning hours of their lives. The glowing chemical travels from one end of the creature to the other. One researcher calls it "reminiscent of the soul departing the worm."

A computer game wants you to help survey the world's cropland. The hope is that the map will be used by organizations around the globe that are working with farmers to manage their crops better and get more out of each harvest.

On Thursday, Ford will unveil the new generation of its iconic pony car in the U.S. and cities around the world. The Mustang is eagerly awaited in Europe, where it hasn't been sold since 1979.

At home and abroad, mourners remembered Nelson Mandela as the father of South Africa. In front of his home in Johannesburg, hundreds gathered to sing in praise of the departed anti-apartheid leader.

Twitter on Thursday changed its blocking policy, then changed it back. Users were outraged that the initial switch allowed stalkers and abusers open access to their posts. Some say the incident shows that Twitter isn't listening to women and cyberbullying victims on the site.

Universities and hospitals are training residents by having them practice on realistic replicas of actual patients' brains. The high-tech stand-ins allow the students to learn by making mistakes, something they're not able to do when real patients are involved.

Finite rental stock and the latest tech boom are combining to squeeze a lot of San Franciscans out of their homes. One Bay Area writer explains how it's not the same as the last time around.

The Food and Drug Administration just approved United Therapeutics' Orenitram, a pill for the treatment of pulmonary arterial hypertension. Martine Rothblatt founded the company to develop treatments for life-threatening illness that afflicted her daughter.

Cities sitting nervously on the edge of wars have a tendency to change very quickly. Take Pakistan's capital, for example. But some things never change, like an unexpectedly delicious Chinese restaurant.