Faced with the evidence, many deniers have started to admit that global warming is real, but argue that humans have little or nothing to do with it.

It is clear that while science provides insights into the complexity of the world around us, those insights...present a fractured mosaic rather than a seamless whole. There are profound limits to science that must be recognized if we are to minimize the destructive consequences of using the powers provided by scientific discovery.

The environment is so fundamental to our continued existence that it must transcend politics and become a central value of all members of society.

We have become a force of nature Not long ago, hurricanes, tornadoes, floods, drought, forest fires, even earthquakes and volcanic explosions were accepted as “natural disasters or “acts of God.” But now, we have joined God, powerful enough to influence these events.

Most North Americans know that human-caused global warming is real, even if political leaders don't always reflect or act on that knowledge.

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.

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.'