If you think one person's efforts can't make a difference in this world then you need to see what the Forest Man has accomplished in India.
The Forest man
The Forest Man of India
Since the 1970's Majuli islander Jadav Payeng has been planting trees in order to save his island. To date he has single handedly planted a forest larger than Central Park NYC. His forest has transformed what was once a barren wasteland, into a lush oasis. Humble yet passionate and philosophical about his work. Payeng takes us on a journey into his incredible forest.
https://www.youtube.com/watch?v=HkZDSqyE1do