Word: mile-long
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...first proposed that people and apes had a common ancestor. Kanapoi and Allia Bay, the sites where Leakey and Walker made their discoveries, lie about a day's drive north of Nairobi along the shores of Lake Turkana in the East African Rift Valley. An 1,800-mile-long gash in the surface of the earth, the Rift has yielded many important clues to early human history, because of its unique geology. Layers of sediment preserved animal specimens, while the volcanic eruptions that periodically shook the valley produced ash and lava whose radioactive elements make the fossils easy to date...
...last time, 35,800 ft. down to the deepest spot in the world--the Mariana Trench's Challenger Deep just off Guam in the western Pacific--undersea adventurers are preparing to go back. Last March a Japanese robot scouted a tiny section of the bottom of the 1,584-mile-long crevasse and sent back the first real-time video images of deepest-sea life. And in laboratories around the world, engineers are hard at work on an armada of sophisticated craft designed to explore--and in some cases exploit--the one great unconquered place on earth: the bottom...
...rent and wrinkled with a topography that puts dry land to shame. Not only do the seas hold canyons deep enough to hide the Himalayas, but they are also the setting for what is by far the largest geologic feature on the planet: a single, globe-circling 31,000-mile-long mountain range that snakes its way continuously through the Atlantic, Pacific, Indian and Arctic oceans...
...first glance the park seems spacious enough to accommodate all comers. It covers more than 1.2 million acres and the most dramatic 56-mile stretch of the 277-mile-long Grand Canyon. But the broad vistas are deceptive. The rugged terrain funnels visitors along narrow strips of trails and roads alongside both rims and into facilities that have been overcrowded for years...
Britain and France hope the U.N. peacekeeping mission can hang on long enough to help produce a negotiated settlement, which some experts believe might finally be possible. The Serbs have held their 1,000-mile-long front lines for three years, and their field army of up to 80,000 is stretched thin. The Bosnian government's forces lack heavy weaponry but have grown to about 150,000 troops. "The Bosnian Serbs are overextended," U.S. General John Galvin, the former NATO commander, said in Washington last week, "and they are outnumbered." Still, they have artillery. Norman Cigar, a military analyst...