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Originally Published by NASA Earth Observatory - When viewed from space, clusters of airplane contrails make distinctive geometrical patterns.

Originally Published by NASA Earth Observatory

– Russians are still coming to terms with what NASA scientists say was a 7,000-ton chunk of space rock that hurtled out of the sky at 40,000 miles an hour, exploding over the Ural Mountains, spraying debris for miles around and, amazingly, killing no one.

Originally Published by IEEE Spectrum

– Two groups of researchers have recently delved into historical datasets to illuminate the tools used by two prodigies of long-range navigation, Pacific salmon and homing pigeons.