They cut them down to make things out of them. People also cut down trees just to get rid of them so they can plant crops. They plant beans, rice, carrots, bananas, and everything else that grows and people want. Except that many logging companies and the people who work for them chop down every single tree in sight, even very old trees.
Old trees are important.
Their roots keep the soil from washing into the sea. They keep the air clean and the streams clean where the fish live. Birds make nests in them. For nearly two years, her feet have not touched the ground - not even once. She has been in newspapers and radio shows all over the world, explaining why we should stop cutting down our ancient trees, and asking for help.