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Re: extinction5



I forgot to mention this:

> A well known example: The energy of the sunshine don't cause any
> catastrophe on sailboats. It was same at Roman fleet, too. But Mr
> Archimedes could set Roman boats fire at Syracuse with sunshine. He didn't
> give any energy. He increased only the energy density of the sunshine with
> his optics.

The energy of the cosmic dust doesn't cause any mass extinctions either. But
when, instead of a few tiny dust particles per square meter all over the
world, the same mass comes down all at once in one block, then we get a big
catastrophe.