Humans are entering the top of our population growth curve.
Partly because some of us have chosen to limit births, but also because, for the very first time in human history, earth is limiting our births for us.
Until recently, this is what all the human population growth charts looked like:
Doomsday scenarios say if we keep reproducing at greater and greater rates, we will soon run out of food, water, and space.
Populations race exponentially upward until the critters have filled their environment. Then the environment pushes back.
Now, some of that is sociological. For people in rich countries, kids are expensive, social services means you don't need them to take care of you in your old age, and better medical care for children means you no longer need a bunch to have some reach maturity. So people choose to have smaller families.
Think about it.
- We are the only true world-wide species. (Other world-wide species, like Norwegian rats, live off us).
- If the whole world is our environment, we have only just filled it.
- As we cover the earth, our waste products spread--primarily industrial and agricultural pollutants. These decrease our health, and many act like hormones to decrease our fertility.
- As a global monoculture, we are fast food central for human disease organisms.
Giving the earth a chance to push back.