Word: fossilizing
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Dates: during 1990-1999
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...prehistoric genealogy have been well established, most of the crucial details still need to be filled in. Perhaps the most pivotal of them all: Precisely when, how, and most important, why did australopithecines like Lucy evolve into true humans? Murphy's Law, unfortunately, has arranged matters so that the fossil record is especially sparse between 2 million and 3 million years ago, just when the crucial transition took place...
...Ethiopia found a partial skull of a new species of human ancestor from 2.5 million years ago, right in the middle of the gap. They also discovered evidence that someone was using tools to butcher animals in the same location at approximately the same time. And they found fossil arm, leg and foot bones that will provide experts with important clues about how human ancestors were built in those days. Exclaims anatomist Alan Walker of Pennsylvania State University: "This is really exciting...
...power became his passion. After finding the time to finish his law degree at Stanford in 1985, Hayes was drawn back onto the environmental front lines by groups looking forward to the 20th anniversary of the first Earth Day. The threat of global warming caused by the burning of fossil fuels had thrust the environment back into the headlines, and it was time to make Earth Day 1990 a global happening. Hayes didn't disappoint. Spurred on by his organizational efforts, nature lovers staged spectacular events around the world, from a 500-mile human chain across France to a gathering...
...year. "Anything that reduces energy consumption and cuts down on greenhouse gases is good news," he says. In his redesign of the Reichstag, the seat of German government in Berlin, Foster has carried this out to an extraordinary degree. He noted that the old Reichstag, heated and cooled by fossil fuels, produced 7,000 tons of carbon dioxide a year. Foster came up with a system of "driving the building" with renewable vegetable oils, such as rapeseed, for fuel. Its CO2 emissions have dropped 94%, to 440 tons a year. The waste heat is converted into cooling capacity...
Richard, meanwhile, continued his rise to prominence. Fossil finds such as the astonishingly complete 1.6 million-year-old skeleton of an African Homo erectus (Homo ergaster to some) and the Black Skull have added immeasurably to our knowledge of human origins. His career benefited from best-selling books, a television series on human evolution and popular lecture tours...