The Week In Numbers: The Top Speed Of A Polar Bear, Quark Mystery Solved, And More

25 miles per hour: the sprinting speed of a polar bear (read about Google’s quest to bring polar bears to Street View here)

500 trillion: the number of particle collisions it took to discover the last as-yet-unproven way of making top quarks

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2016: the year the Hybrid Air powertrain, which propels a car using compressed air, will be available in Europe

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$399: the price of the gorgeous Harman Kardon Aura Bluetooth speaker

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5 feet: the length of each of six aluminum legs on this car-size Crabster underwater-walking robot, which will soon help excavate 12th-century shipwrecks

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4.8 percent: the portion of Bitcoin users who are female (read why that’s a big problem here)

24 pages: the length of a recent scientific paper examining why people hate Hawaiian shirts

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10 times the mass of the sun: the size of the black hole astrophysicists observed to discover what matter escapes a black hole’s grasp

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