Greenland was named that for a good reason. It was green in the past.

What if a quantum computer was used to benefit mankind?

I estimate about 2097 or later. It took over 50 years to go back to the moon and a manned mission just to orbit Mars and return is 10 times harder.

American politicians let China get the technology to get payloads into orbit. The Chinese will use that technology against their neighboring countries and America one day.