We were aware of it back in the late 1970s. There was a lot of talk about the greenhouse effect. - Joanna Haigh

I think it is possible to get the carbon dioxide emissions down and to get the temperature increase slowed down. It just requires everybody to work together to do it.

Solar geoengineering, I’m afraid I think it’s a fool’s paradise, and I’ve been saying the same thing for many years.

Without concerted and swift international action to reduce emissions of greenhouse gases, the 1.5°C threshold is likely to be passed by 2040 and the report () sets out very starkly the costs of inaction.