Space...
Finally this problem has been cracked and knocked off the list ....
https://www.space.com/missionlaunches/xprize_full_coverage.html
It is amazing to see this happen ... and i hope this is only the beginning.
It sounds soppy i know ... but i am proud that Paul Alen is using his Microsoft made billions to fund projects like this. I am sure someone else would have eventually done so also ... but it is great to see world changing projects like this made possible indirectly due to Microsoft.