World Population Day :(

According to United Nations Population Fund (UNFPA), the world's population(already at 6.7 billion) will double in the next 40 years if current growth rates are left unchecked.

That would be 13.4 billion people by 2050, the thing is that regardless of which ecological model you use (energy, water, food, biodiversity, climate change), the ecosystem falls apart somewhere between 10-12 billion people, which is why the UN estimates have always stated that the global population would max out at at 9 billion for year despite numerous objections from population experts. It had to, otherwise they would have to concede that billions of people will be condemned to death.

We have officially past the point of no return