 moves too fast for us to stop it.
End of food
The amount of days the world population can live on the food we have stored in case of emergency keep getting lover. So if the planet hits a tough year with lover food production than normal it can trick a whole row of events, destabilizing whole countries, setting the whole world on fire.
Climate change can radically change how much land is available for us, where we can grow food and where we can run for shelter. Through history just small variants in the global temperature and weather has most likely played a huge role in making whole cultures and empires collapse, as the balance tipped away from being sustainable under a new climate.
More and more countries on Earth have the firepower to drastically change the curve of the world population in less than an hour today. Not only the classic super powers, but also new upcoming nations and dictators more and more often get their hands on new and ever more destructive nuclear, biological and chemical weapons.
Less children – more power to women
The solution to population growth that a lot of people pray for is that we somehow will be able to gradually slow down the global population growth by having fewer children. Unfortunately only a few countries are heading this way fast enough for it to make a huge difference as things look today. But there is one factor that has the power to change all this and that is if women at a global scale, gets much more to say, and men better at listening.
The world population boat
Already with the world population alive on the planet today we have most likely passed the carrying capacity of the planet. (link: http://worldpopulationhistory.org/carrying-capacity/ ) But there are still sugar water in our straws and those in charge of the steering wheel still make great profit from the way things are today.
The global population on the planet has often been compared to sailors in a small fragile ship, far out at sea. our little global ship keeps getting more and more crowded, but it is still floating and the sea is quite calm at the moment.
The hard thing is to figure out how we can possible keep it floating, and head in the direction of a more sustainable place for all, before the weather change.