That is a question that can't be adequately or even approximately answered, but a ballpark answer would be: "When the Industrial Revolution started".
There is no "new planet" for people to live on. The only planet in which life is known to exist on is Earth.
the planet earth is big and has alot of people on it.
no
Jupiter
People have walked on only one planet and that's our Earth. The only other place they've been is the Moon, which isn't a planet.
contaminating
Which planet to start from is the big question . .
Perhaps the Chernobyl incident in the Ukraine caused Ukrainians to move to Russia therefore contaminating Russians
As soon as they realized we are going to start running out of fossil fuels soon and our planet is already polluted enough as it is, thus the need to change our ways and help save the planet. Also, when Al Gore made that documentary on it.
There is no "new planet" for people to live on. The only planet in which life is known to exist on is Earth.
Planet Earth
Pollution
SATALOVE
On the planet Tatooine
Mars
the planet earth is big and has alot of people on it.
One Planet One People was created in 1986-10.