Big Question: Can humanity counteract the damage it's done to Earth?

We all know we've got big problems: disease, poverty, war, inequality, world hunger and environmental destruction, not to mention the surprises the Earth itself has in store for us. We can also all agree we need to get to work -- so what's at the top of the list?

Resident expert Elie Wiesel and several other Curiosity experts share their thoughts in this video.

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