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Why Do We Yawn and Why Is It Contagious?

Pinpointing exactly why we yawn is a tough task, but the latest research suggests that our sleepy sighs help to regulate the temperature of our brains


How Many Stradivariuses Exist and More Questions From Our Readers

Why octopuses use tools, preserving flight plans, famous portraits and more

How do you ensure documents left in a time capsule will be legible after 100 years?

How Do You Keep Items Safe in a Time Capsule and More Questions From Our Readers

Also learn more about the jaw harp, why it takes three days to get to the Moon and more

Animals, like humans, do go bald. Hair loss or fur loss can be seen in several animals, including coatis, Andean bears and cats of various species.

Why Don’t Animals Go Bald, Like Humans and Other Questions From Our Readers

Your questions answered by our experts

Water crystallizes into ice at 32 degrees Fahrenheit most of the time, but not always.

At What Temperature Does Water Freeze?

The answer is far more complicated than it first appears—water doesn't always turn to ice at 32 degrees Fahrenheit

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