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150 Years American Museum of Natural History

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Brain

What is the Brain?

The brain is the organ inside our skulls. Weighing about 3 pounds, it's our most complex organ. We use it to sense the world around us, think and feel, solve problems, and store memories. It's what makes us who we are.

Try this trippy experiment to fool your brain!

Scientist Rob DeSalle answers kids' questions about the brain!

Explore your nerves by creating a life-sized drawing.

See how good you're at recognizing emotions.

Face-vase illusion.

What you see and what you think you see are different things. Find out what your brain doing behind-the-scenes!

Use Braille to create a message for a friend.

Sunny beach scene showing beach ball in the air and a radio in the sand in the background.

We see with our eyes, but our brains do most of the work. Watch the chain of events that unfold when light bounces off an object and enters your eye.

Take the jellybean test to see how your sense of smell enhances taste.

How fast can you catch a falling ruler? Measure your reaction time.

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