“Climate justice is crucial because those who have contributed least to climate change are being disproportionately affected,” said Aditi Mukherji,an IPCC report author.

Not only do clean energy and technologies reduce climate pollution,they are also good for global health,the report finds,as the benefits for people’s health from air quality improvements alone are roughly the same,or possibly even larger,than the costs of reducing or avoiding emissions.

Greenpeace Australia Pacific chief executive David Ritter described the IPCC findings as a “screaming siren” and a call to action to use solutions already at hand.