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This strange dark blue spot can be found in the ocean off the Central American country of Belize. But what is it?
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It’s called the Great Blue Hole, and it’s an underwater cave over 400 feet deep!
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These pools of water in Turkey look like they were created by people. What are they?
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They’re natural rock formations, filled with water heated by lava deep underground. People love to bathe in them!
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Hawaii is known for its volcanoes. But how close can you actually get to the lava? Don't volcanoes explode?
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Hawaii is one of only a few places on earth where there are gentle lava flows you can see up close!
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This lake is located in Yellowstone National Park, USA. It's heated by lava deep underground. But why's it so colorful?
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The water is too hot for animals to swim in or drink. But it's filled with colorful, heat-loving germs called bacteria!
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What on earth is going on here? Are these some kind of... glow sticks?!
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Nope! This is called Waitomo Cave in New Zealand. Each light is given off by a type of insect called a glowworm.
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Each glowworm spins a long, sticky thread, like a spider, then uses the light to attract insects that get caught in it!
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Voting for this episode is now closed. Would you like to vote on the most recent poll?

I pulled three questions from my jar. Which question do you want to explore next week?

  • When was the doorbell invented?

    -Lauren, 3rd Grade

  • What’s at the bottom of the ocean?

    -Rayne, 2nd Grade

  • How does popcorn pop?

    -Je'Kailyn, 1st Grade

Is Earth the only planet with life?

Watch the video to discover the answer and don't forget to vote for next week's question. There are mysteries all around us. Have fun and stay curious!