Initial idea: Changing the Earth's axis of rotation using sails. Video: Rotation-changing tarp sail 1 and 2, testflight. Material: Tarp, climbing rope, duct tape, trees and wind. Location: Libken e.V., Germany.
Arctic sea ice appears to have reached its yearly lowest extent for 2017, according to scientists at the NASA-supported National Snow and Ice Data Center (NSIDC) in Boulder, Colorado. Observations indicate that on Sept. 13, 2017, ice extent shrunk to the eighth lowest in the satellite record, at 4.64 million square miles, or 1.79 million square miles.
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Video credit: NASA's Scientific Visualization Studio/Helen-Nicole Kostis.