Engineering360: "World Scientists Issue a Second Warning to Humanity"

Instead of "renewable" energy sources, we need to say "low or zero carbon" energy sources in order to permit nuclear energy generation. I think fast nuclear is much better than thermal nuclear.

On human population, I suggest we shoot, worldwide, for an average of 2 children per female. Note that this is an average, not a limit; that is, some will have more and some will have none. If this is accomplished, the population would gradually decline because not all children would reach child-bearing age.