Chris Duffy

Obviously, that came at an incredible cost of human lives, of suffering, of poverty, of all sorts of issues.

However...

It's been disheartening to me to see that we've kind of come out of this inflection point, and it seems like we're trying to claw back to exactly where we were.

What doors did that open for you in terms of perceptions of the future and possibilities?

And is there a way that a healthy planet can coexist with a healthy global economy?

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Genomics pioneer Robert Green says many parents want their healthy newborn's DNA screened for diseases that may or may not show up later in life.

The debate over revealing the secrets in babies' DNA.

That's next time on the TED Radio Hour podcast from NPR.

Subscribe or listen to the TED Radio Hour wherever you get your podcasts.

We're talking with Bill McKibben about environmentalism and the fight against climate change.

I want to go back to something you said earlier, which is that one of the really important parts for you in doing this work is having a connection to nature and to what you're fighting for.

Where do you get that connection?

How can a person who's not an acclaimed writer and environmentalist do their own version of bearing witness to the earth?

All you have to do is

That gives me a lot of hope.

What are some things that make you hopeful about the possibility of tackling climate change?

It's interesting to hear you say the part about the big brain, because I do feel like there's a subset of people, at least that I hear from sometimes now, who seem to think that we can continue to live exactly the way we're living now and that there will be some.