Colonel Chris Hadfield has a unique perspective over most people about the health of our planet. He’s seen the intersection of our atmosphere and the universe at large.

For many, man-made climate change is a done deal. The science is in, and it cannot be argued against. Others, however, take the position that nothing is certain and there may be nothing we can do to change it, even if.

Hadfield offers his astronaut’s view of the Earth in the hope of encourage us to a broader view of the issues that we face.