It's extremely hard to know what the economic consequences of any decision will be. And I'm not a, a, a financial analyst, so I, I generally don't try to make some kind of prediction about that.

We don't survive without plants and animals because we rely on them, we rely on plants to put oxygen into the atmosphere, we rely on ... fish and crops and cows to eat.

Scientists are scientists. They're not really in a position to speak clearly on the moral dimensions, and they're not really comfortable doing that.

It really is a very radical call ... to reject materialism as our central value and to think about the sanctity of life and what that really means if we take it seriously.

It's extremely hard to know what the economic consequences of any decision will be. And I'm not a, a, a financial analyst, so I, I generally don't try to make some kind of prediction about that.

Many people have the impression that there is significant scientific disagreement about global climate change. It's time to lay that misapprehension to rest. There is a scientific consensus on the fact that Earth's climate is heating up and human activities are part of the reason. We need to stop repeating nonsense about the uncertainty of global warming and start talking seriously about the right approach to address it.

Scientific monitoring is going to be terrifically important, because whatever steps we take ... we will have to monitor those steps in order to know if they're actually working.