Half the people in human history who reached the age of 65 are alive now. 16 years ago
The world can live on hemp seeds, edible mushrooms and giant silkworm moth larvae. You can power a laptop by biking. You can power a bike by biking.
If every person had just one child, the world population would drop by 50% in thirty years, disregarding wars, catastrophes and epidemics.
The world won't end. It'll just change... when you notice it may end.