If only one child per female was born as of now, the world's population would drop from its current 6.5 billion to 5.5 billion by 2050, according to a study done for scientific academy Vienna Institute of Demography.Did you really think that bottled water and solar power was going to save the planet?
-By 2075, there would be 3.43 billion humans on the planet. This would have immediate positive effects on the world's forests, other species, the oceans, atmospheric quality and living standards.
-Doing nothing, by contrast, will result in an unsustainable population of nine billion by 2050.
Bottom Line: There are too many of us, and the easiest way to have fewer of us is to not have kids. (And, no, there's no free pass for PhDs!)