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Artículos sobre Curious Kids

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Leap Day is coming. Marvin Samuel Tolentino Pineda/iStock, via Getty images

Why does a leap year have 366 days?

Humans have synced their calendars to the sun and moon for centuries, but every so often, these systems need a little correction.
A full set is two on the top and two on the bottom. Sebastian Kaulitzki/Science Photo Library via Getty Images

Why do people have wisdom teeth?

Two dental experts explain that these furthest-back molars may be a not-so-necessary leftover from early human evolution.
Two crystalline materials together: kyanite (blue) embedded in quartz (white). Photo 12/Universal Images Group via Getty Images

How do crystals form?

There are a lot of myths about crystals − for example, that they are magical rocks with healing powers. An earth scientist explains some of their amazing true science.

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