Oasis Earth confirms that we are destroying the biosphere of our Home Planet. We know the causes, consequences, and solutions to this existential crisis, yet we've failed to correct it. We are out of time: this decade is our last best chance to save a habitable Earth. Rich with insights from those who have viewed our planet from space and evocative images from the U.N. Environment Program's international photographic competitions, NASA, Greenpeace and others, Oasis Earth weaves a journey through the extraordinary diversity of life on Earth, the interrelated causes of global ecological collapse, and the path to a livable future.