We can do a lot of things in our daily life to help our earth.
Not by one,if you challenge with friends and family,the mind to environment will expand.
Check your ecology level through the test.
from child white paper 2010 ( http://www.env.go.jp/policy/hakusyo/kodomo/h21/index.html )
NO! global warming
NO! water pollutant
NO! expand of chemical materials