Trees are all around the world - they provide shelter, food and wood.
Forests also play a crucial role in absorbing carbon dioxide and thus regulating the global climate. People have already deforested large swaths of the world, with consequences for ecosystems, plants and animals, and even humans themselves.
Senegal's Siné Saloum Delta is a biodiversity hotspot. But drought, climate change and the uncontrolled logging of mangrove forests, has meant the ground's salinity has shot up – threatening the livelihoods of thousands of people living there.