With Barry Evans
Four billion years ago, Earth and Mars were sister planets with deep oceans and thick carbon dioxide atmospheres. But smaller Mars froze, its oceans evaporated and its atmosphere thinned. Could it be possible to recreate ancient Mars by warming the frozen CO2 in its polar ice caps, triggering a runaway greenhouse effect to raise the planet’s temperature? In 100 years, Martian explorers could walk around on the surface in shirtsleeves, using “re-breathers” for oxygen. Given another 1,000 years, photosynthesizing plants could give Mars a breathable atmosphere, the real beginning of colonization. Science fiction or fact? We’ll discuss the viability of the above scenario, and whether, ethically speaking, we should even try. Not forgetting the ramifications for the future of Mars if we find life -- extinct or extant -- on the Red Planet. No science background needed!
Wed., Nov. 6 • 1-3:30 p.m.
Humboldt Bay Aquatic Center (HBAC)
$35 • Class #: 43830