What (do you think) is Humanity's Greatest Challenge?

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The X PRIZE Foundation is always looking for new ideas around what people consider to be the largest, most challenging issues facing humankind today, and this is our "soap box" for you to be heard.

Tell us what grand challenges you think the world ought to be thinking about.

And while we're interested in the opinions of individuals, we're also interested in the opinions of the group.

An X PRIZE committee will review the videos that receive the most votes to determine a winner.

How to participate

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