The space elevator is the most game-changing investment we can make. The cost of getting into and out of orbit is the main barrier to any grand space scheme lik

The space elevator is the most game-changing investment we can make. The cost of getting into and out of orbit is the main barrier to any grand space scheme like mars, moon bases, or asteroid mining. It would also become a target of extremist anger and ignite divisions about tech. Runner-up might be a serious global scale geothermal plant for renewable power.