墨西哥海军在维拉克鲁斯州东部发现两处集体墓地,里面至少葬有10具尸体。军方称,他们在周六逮捕的一名男子的带领下来到这里的,此人自称是该国最大的贩毒团伙Zetas的成员。
After more than two decades of drilling, Russian scientists say they've reached the surface of a gigantic freshwater lake in Antarctica. Lake Vostok is beneath nearly 4km of ice. Jonathan Amos reports.
经过20多年的钻探,俄罗斯科学家称已探到南极洲一处巨型淡水湖的表面。沃斯托克湖坐落在冰层下近4千米处。Jonathan Amos报道。
This has been one of the great Antarctic ventures of recent decades. Radar surveys have indicated the presence of a lake six times the size of Luxemburg, the base of the ice sheet. Its water is kept liquid by the warmth of the rock bed and by the immense pressure of the overlying ice. Scientists expect their studies of Lake Vostok to tell them about the past climate of Antarctica, but they are fascinated also by the life forms they may find down there. The water has very probably been cut off from the outside world for millennia, in which case any microorganisms in the lake will almost certainly have evolved into new forms.
这可称得上是近几十年来最大规模的南极探险,雷达探测显示,冰层下有一处面积相当于卢森堡六倍大的湖泊。由于岩床传递的热量,以及上面冰层的巨大压力,湖水一直没有冻着。科学家期待对沃斯托克湖的研究能揭示南极过去的气候,不过他们也对湖中发现的生物很着迷。这里的湖水很可能与外界隔绝上千年,其中的微生物很可能已经演化为新物种了。