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Enlarge ImageBoom! A drop of water flies apart in midair. Credit: Emmanuel Villermaux Here's a question for a rainy day: How do clouds create such a wide variety of raindrop sizes? The answer, according to stunning new high-speed movies, is much simpler than physicists thought. The idea has been that raindrops grow as they gently bump into each other and coalesce. Meanwhile, more forceful collisions break other drops apart into a scattering of smaller droplets. All this action would explain the wide distribution of shapes and sizes. But trying to unravel how the drops crash and break up led...

DOSWELL, Va. - Was it a UFO or something else that hovered in the sky over Kings Dominion Amusement Park this weekend? That's the question many are asking after watching a video posted on You Tube. The video shows a large dark hollow circle formation in the middle of the sky, near one of the park's rides. WAVY.com contacted Kings Dominion, which is located 20 miles North of Richmond. A spokesperson said it is a smoke ring from the park's Volcano ride. Whatever it was, it has people talking. Let us know what you think by leaving your comments below...