There is roughly 6.5 billion people according to a programme.This may be fake or true, I am not quite sure.
None, we are all aliens.
It depends on how many people live in america.
1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000;
----
Everyone
7,000,000,000
9,385,223,451,562,982
10000000
Approximately 7 billion.
Most people in the world do really want to live in a clean enviorment.
Millions of people live in shanty towns with no water and the most little electricity.
Not including the USA, about 5.7 billion people.