Our world is under serious threat. Not from supervillains or alien invaders, but from monsters of our own making- climate change, environmental degradation, and the growing inequality between the haves and have-nots. The world certainly looks messed up, but it can be saved. Not by caped crusaders or celluloid superheroes, but by us. Ordinary teenagers can do extraordinary things to make our world better, and this book shares the inspiring stories of many such heroes, along with simple, practical tips on how we can all roll up our sleeves and help make a difference. How we can help bring to life what many see as the solution to the problems we face- making the UN’s Sustainable Development Goals come to life. I’m not an eminent expert or grey-haired academic, just a teenager who believes that we can all do our bit to make a difference, a teenager who believes we can all be heroes. All it takes is for us to step up and do our bit to save our world. The world we will inherit as adults.