I'm Bill Moyers. It's good to have your ear.

18-year-old Kelsey Giuliana on defending our future against climate change.

You don't have to call yourself an activist to act. I think that's so important that people my age really get into their heads.

As a younger person, I have everything to gain from taking action and everything to

lose from not. I have my whole life ahead of me.

So, you know, if I'm making the decision to stand in front of a culture and that's a very

serious decision. The risk is actually quite high. And I think because

of that, it's also really important that youth are the ones who are standing up, speaking out,

because of the fact that we do have, you know, so much to lose. Thanks for joining us.

Even if you're in denial, and I hope you're not, you know about climate change.

Everyone can see the wildfires and drought in California, the fatal flash floods in Arizona,

the punch of a hurricane pounding Mexico's Baja Coast, the strongest in nearly 50 years,

battering locals and trapping tourists in their hotels.

These disasters are made more powerful by global warming, and it's only going to get worse for us and for future generations,

unless we act now. That's why more than 120 world leaders are coming to New York City next

Tuesday for the UN's Global Summit on Climate,

trying yet again to provoke governments to get on with it, reduce those carbon emissions

that are heating up the atmosphere before it's too late. So here in New York, in the days leading

up to the summit, there's a lot happening to keep the UN on point.

The People's Climate March, perhaps the largest ever, with over a thousand organizations

behind it, a three-day gathering of religious leaders at Union Theological Seminary on what

the National Catholic Reporter calls the number one pro-life issue of our time, climate change.

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