Exactly!

Now that's what I've always said about human beings being harmful for Earth.

All of us should plant some trees.

PLANT TREES!

SAVE THIS PLANET!

SAVE YOURSELVES!

I'm gonna plant some more trees in the future.

I might even hold a campaigne or something for tree planting, too.

LOVE YOUR PLANET, PEOPLE!

IT'S YOUR FUTURE!

(or your great-great-great-great-great..................grand-sons' or daughters'...)