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The rule, implemented by the U.S. Golf Association (USGA) and Royal and Ancient Golf Club (RA), means that from the start of 2010 the U-shaped grooves on wedges will be banned in favor of V-shaped grooves, with the intention of rewarding accurate driving over distance hitting.
CNN: Woods backs golf's 'groovy' rule change
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The side-view mirrors on most cars are flat, and while they give drivers an accurate sense of the distance of cars behind them, they have a narrow field of view, leaving a space behind the vehicle -- the blind spot -- that a driver can't see.
CNN: Disco ball-inspired mirror gets rid of driver's blind spot
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Radar measurements are incredibly accurate: we get the distance to the asteroid very, very precisely, and we can also get its velocity relative to us.
BBC: Apophis asteroid: Large space rock flies past Earth
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Most contemporary technologies, for example, only work from a maximum distance of eight meters, and aren't as accurate within more densely populated areas.
ENGADGET: DARPA to develop biometric sensor capable of seeing through walls, pulling your heartstrings