Xiuhtezcatl on lifelong climate activism

If you're feeling like you could use a dose of youthful optimism right now, we've got you. Check out these visits from inspiring young activists.

Jon Stewart sits down with Malala Yousafzai, and Trevor Noah enjoys visits from Greta Thunberg, Parkland survivors X González & Matt Deitsch, and climate activist Xiuhtezcatl Martinez.

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