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...number itself isn't what worries people, though: it's whether this newly identified methane source is part of an ominous trend. Climate scientists have long worried about the enormous amount of methane locked in Arctic permafrost, the thick layer of soil just beneath the surface that remains frozen all year. The methane was originally deposited there through decomposition of organic matter in ancient wetlands, and as long as it stays put, it can't contribute to climate change. (See the top 10 scientific discoveries...
...stake; that in Canada, hockey ties together the nation in way that no other sport can even dream of uniting all Americans; that a Canadian win would give the country 14 gold medals, a record haul; that if Canada lost to its overbearing neighbors to the south, on home soil, the streets of Vancouver could have turned perilous...
...suspected that the group receives tactical support from forces within Pakistan, including the same elements in the country's notorious military intelligence that helped form the Afghan Taliban. If Islamabad was involved in Rigi's capture, the move, combined with recent arrests of senior Taliban leaders living on Pakistani soil, could be a sign of the country's new seriousness at getting to grips with terror groups in its midst. "[It] may mark a dramatically different, and welcome, approach by the Pakistani security setup," suggests a Feb. 25 editorial in Dawn, an English-language daily in Pakistan. (See Pakistan...
...concentrations, arsenic is not without risk, especially to small children who play on the floor and routinely transfer things from their hands to their mouths. The same is true for lead, which comes less from wall paint - the source most people would expect - than from auto exhaust, smelting and soil deposits. "Lead loading on floors is a key determinant of blood-lead levels in children," Layton and Beamer wrote in their paper. (See "The Year in Health 2009: From...
Let’s talk about this “policy question” for a minute. During the Cold War, it was in the interest of key European allies and the U.S. to position nuclear weapons on European soil, an act that caused much disdain among rank and file European populations. But America and our allies went ahead with these installations. We didn’t change our policies to encourage people to like us. Rather, we stood our ground in favor of our national interest and earned the respect, if not the admiration, of our tentative audiences. There...