During the Glasgow climate summit, one of the first international agreements was to stop deforestation and finance tree planting in developing countries.
Mangrove forests bind more than four times as much carbon dioxide as ordinary tropical forests.
In Kenya, there are a couple of pilot projects where they sell emission rights against the planting of mangrove trees.
It is a way to create income for the local population and nature conservation at the same time.
When Mbaarak Abdalla founded the youth group Brain youth group, only 10 percent remained.
- So far, we have managed to plant 1.2 million mangrove trees, he says.
See more in the clip above.