Is Adding Fiber To Food Really Good For Your Health?

Fiber-fortified products are all over the supermarket. But are these foods actually making you healthier? This question turns out to be one of those places where scientists know a lot less than you may think they do.

Hopes, Fears Surround China's Transition Of Power

The transition of power in China this fall will usher out a generation of engineers and technocrats, and replace them with economists and lawyers who may be less scared of political experimentation. But two distinct factions are emerging, and their biggest challenge will be how to handle changes.

Scientists Take Cautious Tack On Bird Flu Research

Last month, scientists around the world agreed to temporarily halt controversial scientific research with bird flu viruses. Some experts say too little is known about how infectious this virus could be to humans, but other experts think those risks have been blown a bit out of proportion.