a post by Paul Braterman for the 3 Quarks Daily blog
Ten minutes difference, and Earth would still be Planet of the Dinosaurs
We have suspected for some decades that the dinosaurs became extinct as the result of a massive meteorite, an asteroid, hitting the Earth. We have known where the impact site was since 1990, if not before. But it is only last year that we successfully drilled into the impact site, and only now, for the first time, do we really understand why the impact was so fatal. And if the meteorite had arrived ten minutes earlier, or ten minutes later, it would still no doubt have inflicted devastation, but the dinosaurs would still be here and you wouldn't.
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I was sorting this item to include in one of my “10 for today” posts. Half an hour or so later I realised that this was not just interesting but very interesting and deserved a post in its own right. There&rsquos a bit of chemistry involved in the explanation but it is really not hard to understand.
Actually I think many of the items in the composite probably do but it take a lot longer to create one post than to shove it in with nine others!!
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