How can pollution be reduced from this earth ?

try planting more trees and stop cutting them down for paper furniture and other wood products. leave the rainforests alone. we are our own worst enemies stop poluting the air. us as a human race look at the factories around your cities and towns were making the polution faster then the forests and trees can filter it. takes at least 4 trees for 2 days to replentish 1 person breathing 1 day.