Ever since humans began living in groups, we have altered the ground we live on, and never has it been more evident than over the last thousand years. Our population has grown exponentially. We have transformed forests into arable land. The technosphere--the sum of all manmade things--has spread wildly. But just as humankind has started to change the Earth's surface, it has also taken measures to alter the impact we've had on it. With breathtaking images captured across the globe, we explore our changing world and what's being done to save it.