Word: soils
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Dates: during 2000-2009
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...debate over Ground Zero has always been colorful - with "greedy" the preferred insult thrown around - but it hasn't been easy to keep up with all the legal, political and economic minutiae. So here is why, almost five years after the worst terror attack ever on American soil, there's still a 16 acre hole in the ground...
...vowed that he would not give up the fight. "Look here," he said, pointing to a map of Liberia. "This is all ours -- except for this little piece called Monrovia, and we are going to keep on fighting as long as one foreign ECOMOG soldier remains on our soil." The damage inflicted on Liberia by ECOMOG artillery fire and aerial bombing, which is carried out by Nigerian air force planes, he claimed, amounts to $4.5 billion. "The Liberian people are going to be bitter against their neighbors for a long time," he continued. "They are finding it hard to accept...
...been frozen much longer than two years--since the end of the last ice age, or at least 8,000 years ago. Sealed inside that cryonic time capsule are layers of partially decayed organic matter, rich in carbon. In high-altitude regions of Alaska, Canada and Siberia, the soil is warming and decomposing, releasing gases that will turn into methane and CO2. That, in turn, could lead to more warming and permafrost thaw, says research scientist David Lawrence of the National Center for Atmospheric Research (NCAR) in Boulder, Colo. And how much carbon is socked away in Arctic soils? Lawrence...
Global warming is tipping other regions of the world into drought in different ways. Higher temperatures bake moisture out of soil faster, causing dry regions that live at the margins to cross the line into full-blown crisis. Meanwhile, El Niņo events--the warm pooling of Pacific waters that periodically drives worldwide climate patterns and has been occurring more frequently in global-warming years--further inhibit precipitation in dry areas of Africa and East Asia. According to a recent study by NCAR, the percentage of Earth's surface suffering drought has more than doubled since the 1970s...
...produces one-quarter of all greenhouse gases BURNING FORESTS REDUCES OXYGEN AND INCREASES DROUGHT SPREADING THE PAIN Deforestation, through clear-cutting or burning, sows havoc far beyond the affected area. The fires release still more carbon into the atmosphere, fewer plants survive to convert CO2 into oxygen, and scorched soil absorbs more heat and retains less water, increasing droughts ?Plants take in CO2 ?Fires release carbon ?Less carbon absorbed ?Soil dries out RISING TEMPERATURES MELT POLAR ICE AND PERMAFROST THAWING OUT The North Pole may be seasonally ice free by 2050. Melting permafrost will release vast...