In 2019, kids around the world are going on strike for the future of the planet, and for their own futures. The British and Irish governments have become the first in the world to declare a climate emergency. Climate change is now one of the biggest issues we face as a society. This book lays out the science behind a natural process that has been massively sped up by humans. It explains the different ways in which we have caused the climate to heat up, from traffic pollution to animal farming, and the widespread effects of this change.