Conclusion, mining the Moon, Mars, etc. is still not so feasible in near future (20 years).
However, I did learn something interesting. Rapid Prototyping, also known as 3D printing, as Curtis Manning presented. It is a technology that uses lasers to form any shape and form of object from engine casting to incredibly delicate mesh.
It is noted that this machine is manufactured in Sweden. While the American purchased it at around $1Mil for research in space application.
During the debate, Tyson Neil DeGrasse the host, remarked on Henry Hertzfeld's use of term "less advanced countries" that whether America is less advanced or not, as we can see bridges are falling, fighting waves of storms helplessly, etc.
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