This stimulating lecture will involve two cosmonauts and one astronaut who have flown at different stages in the 50 years of space flight. It will outline the effects that natural and human impacts have had on climate change. It will examine how the earth has changed, based on how the earth looked 50 years ago and how it looks now, and it will consider the vital role that space research has and is playing in addressing these issues. Held in association with Careers Scotland and the Association of Space Explorers, this lecture offers a unique opportunity to hear from, and engage with, those who have been in space, and seen for themselves the significant effect climate change is having on our planet.