The soldiers collected more than 200 ice samples on the Gauli Glacier. (Photograph: NBC Defence Laboratory 1)
The soldiers collected more than 200 ice samples on the Gauli Glacier. (Photograph: NBC Defence Laboratory 1) - Precisely when will the long-lost US aircraft "Dakota" re-emerge from the Gauli Glacier? Radioactive traces from the Cold War now indicate that this will happen soon. It was a time that left its mark: as the great powers of the 1950s and 1960s carried out above-ground tests of their nuclear weapons, radioactive substances settled on the Earth's surface all around the world. These substances can still be found today, for example in lake sediment, and indicate where relics of that age can be found. A method that also works in the Alps. Since this also applies to glacial ice, scientists use this sediment to date such ice. Up to now, this method has been applied only to cold glaciers that do not or barely move because they are on level ground - such as some of those found in the likes of Antarctica or Greenland.
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