Take a look at the beta version of dw.com. We're not done yet! Your opinion can help us make it better.
As scientists deliver increasingly bleak forecasts of where our planet is heading, it's strange to imagine that the phrase 'climate change' didn't exist in the public consciousness until 1988, thanks to the Congressional testimony of Professor James Hansen. Ashley Byrne went to find out more about the man who delivered one of the first warnings about our climate's uncertain future.