Science

The 2013 America's Cup isn't just about speed demons racing faster than the wind. These days, the 162-year-old international sailing competition is being powered by supercomputers. Tech teams are crunching the numbers to make small changes that mean a big difference in speed.

Some scientists have argued that so much gas leaks out during production that it is actually worse for the environment than coal. But a new nationwide study shows that methane leaks from natural gas production aren't as bad as some feared.

For decades, DNA has been used to identify victims of crime, even victims of war crimes. But there's no international standard for using DNA analysis for identifying bodies after a disaster. So some scholars are calling for an international group with the same reach as weapons inspectors.

For the past couple of years, NASA has been using remotely piloted aircraft to study hurricanes. And they are turning up new information about things like how dust from Africa can determine whether weather systems become hurricanes in the Atlantic.

Planthoppers are champion jumpers — launching themselves upward, hundreds of times their own height, in just a couple of milliseconds. They achieve this feat with the help of cog-like teeth on their legs — the first mechanical gear system ever found in nature.

The chemistry of dozens of streams and rivers across the U.S. is changing. Waters are becoming more alkaline — the opposite of acidic. And the reason is counterintuitive — researchers believe that acid rain is to blame.

"This is the real deal. Voyager 1 has finally reached interstellar space; the first time a spacecraft has been in the space between the stars," says one project scientist. Launched in 1977, the probe has been surveying the solar system.

Cut a tumor from a child's brain and you may save a life. But surgery can hurt the child if healthy brain cells are removed. A Seattle doctor is working on a substance that might help. It binds tightly to cancer cells and makes them glow, so they're easier to distinguish from healthy tissue.

People who lack special needs but simply want to keep their pets with them all the time can easily find fake "service animal" certifications on the Web. But those phony credentials can create problems for people with disabilities who legitimately need trained service dogs.

Range hoods are designed to capture the pollutants from your stove, but many models are not effective and it's hard for consumers to know how good a hood is. But researchers at Lawrence Berkeley National Lab are developing a new standardized test that manufacturers can use to rate their range hoods.