Much of the world used to be covered with trees. But most of the world's ancient forests have been cut down.
Whether through clearing of land for agriculture, legal or illegal logging, or expansion of human living spaces - deforestation has had a broad impact on our planet. Many human populations and animal species depend on forests, while the trees themselves have even become threatened or endangered.
Zambia has one of the world's highest deforestation rates, and many households rely heavily on charcoal to cook. The government is threatening to ban the polluting fuel. But many people have no access to electricity, meaning this crackdown puts their livelihoods under threat.
Romania is home to almost two-thirds of the EU's old-growth forests. But vast areas of these ancient woodlands have been destroyed in recent years. Lawmakers are debating a bill that would dramatically lower maximum penalties for illegal logging. But environmentalists haven't given up the fight.