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.
It’s more than 30 years since the Chernobyl disaster. The aftermath is still there. Most of it is not obvious. In the Czech Republic, for instance, wild boars are still affected by the nuclear catastrophe. Almost half of the animals which are shot in the forests of the Šumava in the south of the country are radioactive.