Architects once regarded Michael Reynolds as a wild man. These days his designs for homes made entirely from discarded materials are gaining new respect.
Costa Rica's natural splendor, coastal beauty, and laid-back attitude have transformed it into an ecotourism hotspot. It also happens to get 94 percent of its energy supply from renewable sources: wind, solar, biomass, and hydropower among them.
In the week before the release of his documentary, The 11th Hour, Leonardo DiCaprio spoke with senior editor Laura Wright from his home in Los Angeles about why he made the film.
A baby bottle. A can of tomato sauce. That wonderfully indestructible plastic canteen you've taken on every hiking trip. Could they be hazardous to your health?
Knowing which beaches are safe isn't always easy. Current testing standards for beach water, dating back to 1986, rely on outdated monitoring tests that fail to alert beachgoers to immediate risks of exposure to waterborne pathogens
How does the environment affect our DNA? Using a new generation of powerful genetic tools, scientists are finding unexpected answers that could revolutionize our understanding of the causes and prevention of disease.
Wall Street analysts are thrilled by the discovery of vast new oil fields deep beneath the Gulf of Mexico. But the oil companies will have to cope with the threat of hurricanes and underwater earthquakes.
Corporations are waking up to the realities of global warming for many reasons -- not least of which is pressure from stockholders. See how one group of investors is working to bring about change.