Altitude sickness is a general term encompassing several disorders that occur high altitudes. High altitude is greater than 8,000 feet; medium altitude is between 5,000 and 8,000 feet; and extreme altitude is greater than 19,000 feet. There are groups...

Altitude sickness, also known as acute mountain sickness (AMS) or altitude illness is a pathological condition that is caused by acute exposure to low air pressure (usually outdoors at high altitudes). It commonly occurs above 2,400 metres...

Mountaineering legend Sir Edmund Hillary, best known for conquering Mount Everest, is in a New Zealand hospital after a fall, media reported Tuesday.Hillary, 87, who along with sherpa Tenzing Norgay were the first men to climb the world's tallest peak in 1953, is believed to...

U.S. officials say they can't detect an increase in Bolivia's coca crop under the country's coca-promoting President Evo Morales _ but say they doubt their own figures.A study released Wednesday by the U.S. Office of National Drug Control Policy found Bolivia's coca production "statistically unchanged"...

Mountaineering legend Sir Edmund Hillary, best known for conquering Mount Everest, is in a New Zealand hospital after a fall, media reported Tuesday.Hillary, 87, who along with sherpa Tenzing Norgay were the first men to climb the world's tallest peak in 1953, is believed to...

President Alvaro Uribe is taking the war on drugs to the supermarket, prohibiting the sale of products made from the coca plant.With the help of more than $600 million a year in U.S. aid, Uribe has strengthened Colombia's anti-narcotics police, seized record tons of cocaine...