An asteroid slammed into the North Sea at hypervelocity. The impact would have sent a massive plume skyward and unleashed a tsunami over 100 meters (330 feet) high. A decades-long fight over what carved a vast crater deep beneath the North Sea seabed has ended. Microscopic “shocked” crystals, forged only under the brutal pressures of an asteroid strike, have settled the matter. Scientists from Heriot-Watt Univer... [4448 chars]