Rethink the Future S01 E06 What if Everyone in the World Planted a Tree?

Around 30% of our planet is covered in trees. Trees are majestic, help biodiversity and absorb CO2. But we’re cutting them down at an alarming rate. It’s estimated that since the start of human civilisation, we’ve cut down almost half the trees on Earth. What would happen if all 7.7 billion of us planted a tree?