We have become a force of nature.

Scientists have been warning about global warming for decades. It's too late to stop it now, but we can lessen its severity and impacts.

We can no longer tolerate what's going on in Ottawa and Edmonton. What I would challenge you to do is to put a lot of effort into trying to see whether there's a legal way of throwing our so-called leaders into jail because what they're doing is a criminal act.

The human brain had a vast memory storage. It made us curious and very creative. Those were the characteristics that gave us an advantage - curiosity, creativity and memory. And that brain did something very special. It invented an idea called 'the future.'

Because countries often have differing political and economic systems, agreements are needed to protect those invested in trade.

How do commercial interests usually protect themselves from liability claims? Through insurance. In fact, in our society, the litmus test for safety is insurance. You can be insured for almost anything if you pay enough for the premium, but if the insurance industry isn't willing to bet its money on the safety of [biotechnology], it means the risks are simply too high or too uncertain for them to take the gamble.

We are upsetting the atmosphere upon which all life depends. In the late 80s when I began to take climate change seriously, we referred to global warming as a "slowmotion catastrophe" one we expected to kick in perhaps generations later. Instead, the signs of change have accelerated alarmingly.