Russians want better protection after meteor blast

What can man do to prevent Earth being hit by meteorites and asteroids? Russia has found, to its cost, that it has no answers. But US and European experts may be able to help with a few ideas that at first glance seem straight out of science fiction, including smashing spacecraft into asteroids, using the sun’s rays to vaporise them, or blasting them with nuclear bombs. That should come as some relief to the many worried Russians who want something done immediately, even though scientists say the explosion of a meteor over central Russia on Friday was a once-in-a-lifetime event. “We must cr…

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