1. 1 matured trees can produce 1 pound of oxigen per year, which is enough to provide oxygen for 2 persons. So, start plant your own oxygen's factory at your very own house.
2. 1 tree can absorb 1 tonne of carbon dioxide per year. So, start adopt your own orchard of 10 trees to compensate your car's emission, your electricity consumption and the air you breath-out.
3. Planting trees around the building compound can reduce the surrounding temperature by 6 degree Celcius! (Is it??)