Our world is no longer the same as it was 50 years ago. Climate change now threatens to undo the past 50 years of progress in development, global health and poverty reduction. For the first time, a global generation of children will grow up in a world made far more dangerous and uncertain as a result of a changing climate and degraded environment. We spotlight 3 groups of children and youth from all across the globe who have decided to step up and do their part for the environment!