- Sep 2007
- N48 51.489 E2 17.67119
Personally, I think we are just about there. You cannot travel to any appealing cities, sites or other tourist attractions anymore. They are so overwhelmed that you can't appreciate or enjoy them. And, climate change. We are losing the ability to feed ourselves. Potable water is already a huge problem for much of the planet. Trash, we a burying ourselves in our consumption.How many humans can the Earth sustain? That would seem to me an important question, given the likely results of the human race exceeding that number.
One estimate is about 9 to 10 billion, which is't too far off from what we have today:
There are a lot of variables, of courses. The Earth can no doubt sustain more bicycle riding vegetarians than car driving carnivores, for example, and then there is the unknown of improved technology.