You Took All the Water Out of the Sea? | Hey You, What If?

Empty the oceans and you’d see hidden wonders, but you'd also cause the end of the world.

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You Could Dig Through the Earth? | Hey You, What If?

The deepest hole humankind ever dug only got one thousandth of the way through the earth. But what would happen if you kept digging?
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We Could Actually Stop Climate Change? | Hey You, What If?

The planet is being destroyed - but this episode demonstrates the things you can do to help save it.