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.

The climate system takes decades to respond to changes in carbon emissions so decisions made now will affect future generations - for better or worse.

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