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That is the beauty of Ardi - good bones. The completeness of Ardi's remains, as well as the more than 150,000 plant and animal fossils collected from surrounding sediments of the same time period, has generated an unprecedented amount of intelligence about one of our earliest potential forebears. The skeleton allows scientists to compare Ardipithecus directly with Lucy's genus, Australopithecus, its probable descendant. Perhaps most important, Ardi provides clues to what the last common ancestor shared by humans and chimps might have looked like before their lineages diverged about 7 million years ago. (See pictures of ancient skeletons...
Scientists know this because they've studied not only Ardi's fossils but also 110 other remnants they uncovered, which belonged to at least 35 Ar. ramidus individuals. Combine those bones with the thousands of plant and animal fossils from the site and they get a remarkably clear picture of the habitat Ardi roamed some 200,000 generations ago. It was a grassy woodland with patches of denser forest and freshwater springs. Colobus monkeys chattered in the trees, while baboons, elephants, spiral-horned antelopes and hyenas roamed the terrain. Shrews, hares, porcupines and small carnivores scuttled in the underbrush. There...
...says, those numbers have been reduced by 60%. But the local government has made an impact too: a drainage system, built by Udaipur's Urban Improvement Trust (a district regulatory body) and the Rajasthan government's Public Health Engineering Department, now diverts sewage downstream, though a treatment plant has yet to be installed...
...approach to the Oct. 1 talks is unlikely to be uniformly defiant or belligerent. Its response to demands from the U.S. and other international players to open the Qom enrichment site to inspection may be indicative of its broader approach. While declaring its refusal even to discuss the Qom plant at Geneva, Tehran has indicated that it will open the site to IAEA inspectors "in the near future." The Iranians are probably hoping for a repeat of the experience of its main enrichment facility at Natanz - which was also constructed in secret but then subjected to an ongoing IAEA inspection...
...faced two game changers. First, the June 12 presidential election spawned a vibrant new opposition movement, a political schism among the theocrats and popular protests that deeply undermined the hard-line regime's legitimacy among its constituents. Second, the gotcha revelation on Sept. 25 about a secret nuclear plant put Tehran on the defensive with both its enemies and allies - and undermined Ahmadinejad's U.N. media blitz, which had been designed to boost his post-election image. (See the top 10 Ahmadinejad-isms...