A record 177 countries signed the UN Paris climate agreement in New York on 22 April. That was a record for signing any international agreement on one day.

A few short days earlier another record had been broken – for the first time on any day CO2 emissions exceeded 409 parts per million. If you want some perspective on how aggressively we are forcing the climate, take a look at this graph, albeit from 2013: Continue reading After Paris, how do we really tackle climate change? →