An increasing population is already an issue. Perhaps not for humans, but for non-human life. More transportation and agriculture means more ways to get to new locations, which in turn means the eradication of the natural environment there. Of course, we could follow the advice of E.O. Wilson and preserve half the earth for other life-forms, but I have little trust that we could do that, especially in developing countries.
No, new developments in transportation are unlikely to solve anything, except give some people more space in the short-term, and cause even more habitat destruction. New efficiencies in agriculture will help in the short term, but then make producing new humans even more efficient, causing even more destruction.
As for your predictions that we will be living in the stars, that's depressing. On spaceships and barren planets? Think terraforming will help? We can't even take care of one of the easiest planets on the solar system, earth.
No, new developments in transportation are unlikely to solve anything, except give some people more space in the short-term, and cause even more habitat destruction. New efficiencies in agriculture will help in the short term, but then make producing new humans even more efficient, causing even more destruction.
As for your predictions that we will be living in the stars, that's depressing. On spaceships and barren planets? Think terraforming will help? We can't even take care of one of the easiest planets on the solar system, earth.