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This new do-it-yourself (DYI) experiment uses Archimedes' principle to demonstrate that oceans expand as they heat up, causing sea levels to rise, even without factoring in melting ice sheets. This process is called thermal expansion - a concept that's traditionally been very difficult to demonstrate in a teaching lab because one liter of water will expand by only 0.2ml per degree Celsius. [Source: Queensland University of Technology]
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