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Drilling up core samples is one of the most potent instruments that science has of analyzing the planet's past in terms of geological changes that took place over the years. In spite of their massive price tags â€" at times reaching several millions of dollars per sample â€" they are still widely used for assessing changes in the Earth's climate over thousands and millions of years, which in turn helps modern experts figure out what the new climate change is all about. But often precious data is lost or compromised by lack of proper storage and freezing equipment, researchers complain.After miles of cylindrical samples are extracted from the ground, they are transported via ship or train from their original location, most often at or around the poles, to specialized research facilities in Europe and the United States. Here, they are kept at temperatures between -20 and -30 degrees Celsius, but geologists say that these levels, which are relatively higher than those in the g!
round, destroy the precious chemical composition of the cores, rendering them useless or, worse, misleading. The main thing researchers look for when analyzing such a sample is the ratio of compounds making it up. As ice forms, it traps inside small bubbles of gas â€" oxygen, carbon dioxide, nitrogen and others â€" which ...
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