Friday, June 10, 2011

What If...?

I used to love when Marvel Comics would run the ocassional "What If..?" issue, well, Scientific America poses the question: "What if Earth Switched Places With Mars?"
*Via David Brin on Facebook, who adds, "But Musser assumes that Earth would freeze. It would -- but not forever! Volcanoes would supply CO2 till a greenhouse melted the seas. Simple calculation. If Mars were bigger, it'd have oceans now, under a dense gaia-greenhouse."

1 comment:

Paul Weimer said...

Have you ever read "A world of Difference" by Turtledove?

The idea is that in this universe Mars was bigger (a little larger than Earth, and called Minerva) and was large enough for life, including intelligent life. Cold war Soviets and Americans make contact...