Joe Hynek may get some guff for carrying a purse, but he says it’s all in the name of science: He has designed a solar handbag that can power small electronic devices like cell phones.

Here are some of the crazy projects built for Legofest 2005.  Great photos.

Scientists have proved that jogging makes you smarter.

Dick Pelletier: What happens when Internet-delivered TV gives viewers complete control of scheduling, content, and commercials? The world is watching.

Injecting embryo stem cells "straight up"—without changing their cell type first—has fixed damage in an animal model of heart attack.

Computers come in many different flavours, but apparently that ain’t enough for everybody. Case modding - the modification of a computer chassis - has become a big hobby for thousands of enthusiasts around the world.  Great photos.

Princeton University scientists have found a new way of tracking people’s mental state as they recall previous events — often called mental time travel.