Obama Wants to Spend 50 Billion to Rebuilt Infrastructure

It's around 90%, according to the US Dept Clock.

That's kind of scary, actually.

International Space Station?

Hardly counts. That's not a sustainable way for more than a small number of highly trained individuals to live off of Earth.



Fractions mean little without a volume to go off of. All of those minerals have use though. Not sure how much of it is extractable.

Distance to Moon: 238,857 miles
Distance to the nearest planet (Mars): tens of millions of miles

Surface Pressure on Earth: 101.325 kPa (MSL)
Surface Pressure on the Moon: 10^−7 Pa (day), 10^−10 Pa (night)