Two hundred years ago, there were less than a billion people on Earth. Today, there are 7.8bn and our population is still growing. According to the United Nations, unless we take action there is likely to be 30% more of us by 2050 and 11 billion people by 2100.

Every one of us places demands upon our planet—the very demands that have caused the changes that threaten us and the natural world we depend on.