Malthusian crisis: Solved for the foreseeable future.
Cold war: solved, (mostly)
Global warming: looked unsolvable, now appears to have feasible solutions.
It would appear that quite a number of problems that seemed unsolvable have been solved in the past. Of course, that could just be the anthropic principle talking.
Malthusian crisis: Solved for the foreseeable future. Cold war: solved, (mostly) Global warming: looked unsolvable, now appears to have feasible solutions.
It would appear that quite a number of problems that seemed unsolvable have been solved in the past. Of course, that could just be the anthropic principle talking.