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...permafrost is on dry land either. The East Siberian Arctic Shelf, a vast expanse of shallow seafloor off Russia's northeast coast, was once wetland as well. It was submerged as melting glaciers drove sea level up at the end of the last ice age, but it still contains methane-rich permafrost, which Shakhova believes may now be becoming unstable. The numbers are not alarmingly large, she agrees, but what is worrisome is that no leakage was expected here. (See TIME's special report on the environment...
What's changed, she thinks, may be that warmer water pouring into the sea from Siberia's north-flowing rivers have raised the sea-bottom temperature to the point where the methane, much of it stored under pressure in the form of methane hydrates, can begin to break free. Unlike the permafrost on land, says Shakhova, soil under the sea floor is always hovering at close to the melting point because of its proximity to unfrozen seawater. Anthropogenic (that is, human-caused) warming may be the last straw...
...like something out of a Hollywood disaster movie. On March 3, a sudden wall of water hit a cruise ship sailing in the Mediterranean Sea off the northeastern coast of Spain, killing two people, injuring 14 and causing severe damage to the vessel...
...detail," she said. "We have a navy [measurement] system that has 19 installations along the coast. The information in the beginning was not exactly from the central point where the epicenter hit. It was thought in the beginning that the epicenter was down in the earth, not in the sea." (See pictures of the earthquake in Chile...
...previously scheduled tour of Latin America this week. Clinton will no doubt praise Bachelet's leadership during the emergency - as most Chileans have, despite the apparent tsunami mishap. It will be up to Piñera to put mechanisms in place to make sure Chile is as prepared at sea as it is on land when the next earthquake strikes...