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My questions for FYI: How would Earth be different if the oceans were fresh water instead of salt water?

If the Space Shuttle no longer flies to the ISS then how does the the ISS get towed back into orbit?

Also, how long before the ISS falls back to Earth? How much will not burn up in reentry to Earth?



June 2013: American Energy Independence

Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.


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