Molecular knot wins record for 'world's tightest'

Scientists at The University of Manchester are celebrating after becoming record breakers and officially being awarded a Guinness World Record for tying the tightest knot ever produced.

NASA sees Typhoon Sanvu's large eye

Typhoon Sanvu developed an eye that was about 28 nautical-miles wide when NASA-NOAA's Suomi NPP satellite passed overhead and captured an image.

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