“Climate change is real. Climate change is being substantially increased by humans and the carbon we put into the atmosphere. And it appears to be speeding up. If science has made any mistakes, science has been underestimating it.”

“When I worked with wildlife a lot in the Eighties and Nineties, I learnt the meaning of patience. And when I worked with trees, I learned the meaning of humility.”

“Science by itself is about numbers, and it's about measuring things. It's very important but it's very dry.”

“Climate change is real. Climate change is being substantially increased by humans and the carbon we put into the atmosphere. And it appears to be speeding up. If science has made any mistakes, science has been underestimating it.”

“We still carry this old caveman-imprint idea that we're small, nature's big, and it's everything we can manage to hang on and survive. When big geophysical events happen - a huge earthquake, tsunami, or volcanic eruption - we're reminded of that.”