From action in China and the US to falling solar costs and rising electric car sales, there is cause to be hopeful
For the last few months, carbon dioxide concentrations in the atmosphere have been at record levels unseen in over 800,000 years. The chairman of the IPCC, an international panel of the world's top climate scientists, warned earlier this year that "nobody on this planet is going to be untouched by the impacts of climate change".
Future generations will no doubt wonder at our response, given the scale of the threat. It's known that death, poverty and suffering await millions, and yet governments still vacillate.
But solutions are available. Here are ten reasons to be hopeful that humans will rise to the challenge of climate change.