9: paper airplanes folded and launched by this inventor’s wonderful gun in its YouTube debut.
0.2 micrometers: the microscope resolution limit Eric Betzig, William Moerner, and Stefan Hell beat on their way to a Nobel Prize in chemistry. Their nanoscopy technology opened up a new, infinitesimal world for researchers to observe.
7.78 million square miles: extent of Antarctic sea ice recorded in late September. The unexpected new ice around the southernmost continent is helping scientists improve climate models.
$1 billion: IBM’s investment in its artificial intelligence, Watson, which has gone from playing Jeapordy! to studying brain cancer.
1: number of babies born from transplanted uteruses so far. Researchers believe more are likely to follow.
$6.8 billion: total impact, in disrupted contracts, of the Sierra Nevada Corporation’s protest against NASA’s space taxi deal with SpaceX and Boeing.
More than 50 percent: amount of electricity in an LED that converts into light, another Nobel Prize-winning technology.
4 percent: conversion rate for alternative incandescent bulbs. Better to go with the LEDs
253 mph: cruising speed of this new military helicopter.
12: number of male rabbits hopping around with transplanted penises, as part of a study that could one day impact humans.
13: armed patrol boat drones that swarmed together in this Navy demonstration.
100s: Bluetooth beacons one company distributed to phone booths all over New York City in order to track passersby. (The city is now forcing the company to remove the trackers.)