(inspiring music) - When I think about how we get to zero carbon electricity, you need a lot of different types of technologies all playing together.

(inspiring music) - I think it's really important, after raising concern about climate change for so long, to give people some idea where the levers are to change it.

- We have technologies today that we can use to actually bring down emissions, make our communities healthier.

We don't need to wait for some massive breakthrough.

We have solutions.

- We go straight to the bottom line in the form of green technology.

Heating and cooling, that can reduce a building's fossil fuel usage by 70%.

There's enough offshore wind capacity to power the country four times over.

- This is something that just a few years ago was considered impossible.

- PBS dares to cover the things that are important, and given the stakes, I'm convinced that people can make the effective change.

(uplifting music)