“Until you dig a hole, you plant a tree, you water it, and make it survive, you haven’t done a thing. You’re just talking.” Wangari Maathai....

Carbon dioxide (CO2) sink in the city / Sumidouro de dióxido de carbono (CO2) citadino. Image by Monica Pinheiro, license CC BY-NC-SA ( C...

Image by Monica Pinheiro, license CC BY-NC-SA ( CC )