Stern says it will cost us a great deal more in the long run if we don't tackle climate change.

Vulnerable countries have an important voice in the international debate around how to tackle climate change.

"Tackling climate change is going to be a whole lot easier if we have America on board."

Is a global agreement the only way to tackle climate change?

Big ideas are what we need to tackle climate change and promote social justice.

They want to know we are serious about tackling climate change.

That means we need new, additional resources to tackle climate change.

One often hears that others are taking the lead in tackling climate change.

There is a great deal of uncertainty about the standards necessary to tackle climate change.

There is no other option if we're serious about tackling climate change.