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We’re closing Season Three of the Breakthrough Dialogues with a lofty vision: what would it mean to leave half of the earth for nature? Today’s guest, Carly Vynne Baker, is a chief advocate of the Nature Needs Half network who manages to break down a huge idea into the gritty logistics. What are the tradeoffs between conservation and food production? How do we balance a top-down vision with bottom-up efforts? And what kind of human management will the protected Half require? We can’t imagine a better way to wrap up our 30th episode than big-picture dreams of practical land protection. As always, let us know what you’re thinking (we’re @TheBTI on Twitter) and who you hope to hear in Season Four. We’ll be back soon.

For more, here's the Breakthrough take on how to achieve a half-earth future.