Tu pourras parler de l'écologie et d'actions humanitaires:
Things that will make the world a better place:
-Recycling your waste (déchets.)
-Stop using cars and start using bicycles not to pollute the world.
-Plant more and more trees and prevent trees from being cut especially where the endangered animals are.
-Pay attention to the nature that encircles you, do not throw waste on the floor.
-Donate your blood to the ones that don't have enough.
-Donate your old clothes to the persons who can't buy it.
Voilà, ça t'aidera je pense :)