Politics hates a vacuum. If it isn't filled with hope, someone will fill it with fear.

GLHR... has used Greenpeace-style media antics to draw more public attention to the plight of sweatshop workers than the multimillion - dollar international trade union movement has achieved in almost a century.

Why would we build as unequal a renewable energy sector as we have built a fossil fuel sector? The nice thing about renewables is they're everywhere, so you don't have to have monopoly control in the same way.

The deeper message that is resonating with people is that it is possible to build. It is possible to invest in people; it is possible to invest in green infrastructure; it's possible to change.

A term like capitalism is incredibly slippery, because there's such a range of different kinds of market economies.

So we are left with a stark choice: allow climate disruption to change everything about our world, or change pretty much everything about our economy to avoid that fate. But we need to be very clear: because of our decades of collective denial, no gradual, incremental options are now available to us.

In pragmatic terms, our challenge is less to save the earth from ourselves and more to save ourselves from an earth that, if pushed too far, has ample power to rock, burn, and shake us off completely.