[extropy-chat] Re: Animals
naddy at mips.inka.de
Wed Feb 18 15:38:15 UTC 2004
Eugen Leitl <eugen at leitl.org> wrote:
> Mid-Life Crisis for the Earth
> 5.6 Gyr (1.1 Gyr from today):
> * Sun 10% brighter: ~1.1 Lsun
> * Cause a moist greenhouse effect on Earth, driving away most of the
> * water in the air.
Oh, okay. That is of course a long shot from the previously claim
that "the sun's expansion would destroy life on Earth in 500 million
> I have no idea how reliable is this. Even 1% of solar constant change
> typically can wreak havoc to climate, so 10% increase sounds pretty
> catastrophic to me.
Yes, but it's a slow, continuous process. Anybody have any figures
how much hotter the sun has grown over the time we've had multicellular
life on earth?
Christian "naddy" Weisgerber naddy at mips.inka.de
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