U.S. business tycoon Richard Garriott blasted off into space aboard a Russian rocket.

Despite another overrun that could push its cost to more than $2 billion, NASA’s next-generation Mars rover mission remains on track for launching next fall.

The Russian space program has found ways to make space pay and has shown that it is leading the way toward the commercialization of space travel.

Our own feet may help seeds travel for miles.

While the study suggests many girls have exceptional talent in math, they are rarely identified in the U.S., because culture discourages girls — and boys — from excelling.

Both John McCain and Barack Obama endorse nuclear energy, although to differing degrees, as part of their strategy to wean the United States from its dependence on foreign oil.

The bill was tacked onto the $700 billion federal rescue, whose overall scope was criticized by many of the original backers of the bicycle tax credit.

Native American tribes in South Dakota are hoping to build turbine farms to take advantage of some of the country’s strongest and most reliable winds.

All 10 provincial governors of the island of Sumatra agreed to a deal to protect endangered forests, a move that could help control planet-warming emissions.

The National Marine Fisheries Service’s new directive applies to some ships in patches of ocean within 20 miles of the Atlantic coastline from Massachusetts to Florida.

A planned for a robotic rover to be sent to Mars has run into budget problems, forcing NASA to make hard choices.

A growing number of “eco-kids,” steeped in environmentalism, are holding their parents accountable.

The new rules would cut the sulfur content of the fuels ships use in controlled areas along coasts by 63 percent as of July of 2010.

The Supreme Court heard arguments over the Navy’s use of sonar in its training exercises off Southern California.

One Japanese and two American scientists won the prize for taking the ability of some jellyfish to glow green and transforming it into a ubiquitous tool of molecular biology.

One Japanese and two American scientists won the prize for taking the ability of some jellyfish to glow green and transforming it into a ubiquitous tool of molecular biology.

Three chemists won a Nobel Prize for the discovery and development of a glowing protein first seen in jellyfish, work that has helped the study of how cancer cells spread.

Circumcision does not protect gay and bisexual men from H.I.V., researchers reported.

In a new report, the United Nations joined a number of environmental groups in calling for an end to — or at least an overhaul of — subsidies for biofuels.

European Union legislators voted in favor of laws aimed at reducing greenhouse gas emissions, but frustrated some environmental advocates by taking steps to ease the burden on industry.