In this summer of harrowing wildfires, temperature records the UN Secretary General calls "global boiling," and shrinking ice caps, there is a growing sense of urgency regarding the climate crisis. A major global summit will take place on the subject later this year. Climate experts Rachel Kyte, David Sandalow and science journalist Laurie Garrett discuss what the agenda must include. Plus a special update on resurgent COVID. Don't miss it.

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