For 75 years we have made conventional chemical rockets and recently ion thrusters to take us to other worlds while simultaneously ruining the only ocean&atmosphere worth visiting.
Road map:
Stop1: Mars
Stop2: Icy outer moons
Stop3: Alfa Centauri - 4.3 light years or 5,879,000,000,000 (trillion) miles.
Keep the air and water on our little spec of dust clean.
http://mobile.nytimes.com/…/victims-of-a-new-african-massac…
The decisions you make today matter. Tomorrows another day.
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