Did life on earth get a jump start from a meteorite?
As climate change heats up the world's ecosystems, many species of plants and animals, from songbirds to whales, are leaving their time-tested home ecosystems for uncharted territory. This Science Update looks at how some plants are changing altitude to find a cooler place to live.
In this Science Update, hear why Olympic runners closest to the start gun may get a slight advantage.
In this Science Update, you'll learn how drugs that share side effects may also have similar benefits.
In this Science Update, you'll learn about the likelihood of asteroids smashing into the earth and what scientists are doing to try to prevent that from happening.
Astronauts on long-term space missions may face health risks that their predecessors didn't have to worry about. These Science Update reports describe two of them.
In this Science Update, learn why human sources of nitrogen may be just as environmentally costly as carbon emissions.
In this Science Update, learn how scientists have sequenced the genetic code of one of nature's strangest animals.
Developing countries often lack access to the kind of imaging systems we take for granted in the industrialized world. This Science Update discusses how cell phones may help alleviate this problem by bringing expensive medical devices to people in need.
In this Science Update, find out if our brains may crave calories, not just the taste of sweetness.
A study looking at why left-handed people are in the minority.
A team of scientists has developed what may be the world's fastest swimsuit.
In this Science Update, learn how scientists have calculated the force it takes to move one atom.
This Science Update examines the technology and work necessary to develop a face recognition program that would be accurate even in public settings.
Fungi with a primitive sexuality may shed light on the origins of maleness.
In this Science Update, hear how leftovers from winemaking could be used to fight dental plaque.
SETI, the Search for Extraterrestrial Intelligence, is looking for more recruits to hunt for aliens with their home computers.
This Science Update looks at the mental health of victims of hurricane Katrina.
The appendix is a two-to-four-inch-long, finger-like tube that dangles from the junction of the small and large intestine. For the past century or so, the appendix has seemed like nothing but trouble—at least in industrialized countries. You can learn why in this Science Update.
In this Science Update, learn how a nonstick chewing gum could reduce litter and household messes.