Réponse :
During his career, Paul Brown has visited many countries to observe problems linked to the environment.
He has worried since many decades about the future of our planet.
Deforestation has been a major environmental problem since many years, the forests have begun to disappear.
Factories spit toxic fumes that bring global heating.
Paul Brown has realized of the emergency of the situation by seing the desastrous consequences created by haman actions.
