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Throw one hundred coins, remove all those that come up tails, place them in a pile, repeat—you've got yourself a hands-on model for radioactive decay. The piles graphically show the meaning of the ...

Soil that stays frozen throughout the year is called permafrost. In Alaska and other place around the Arctic, permafrost is shrinking over time as temperatures warm. (Credit: John A. Kelley, USDA ...

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Based on microwave data gathered via satellite, this image shows the extent of the Southern Ocean around Antarctica that’s currently covered by ice at greater than 15% concentration. (Source: National ...

Soak the seeds overnight in water. Set aside the top of the petri dish, or open the CD case. Cut the paper towel (or coffee filter) to fit inside. With a ruler and pencil, draw a straight line across ...

Substitution ciphers and decoder rings We use substitution ciphers all the time. (Actually, substitution ciphers could properly be called codes in most cases.) Morse code, shorthand, semaphore, and ...

A climate model subdivides the Earth’s atmosphere around it into thousands of boxes in a 3D grid. For each box, such as this one of air over the ocean, the model starts with the current conditions—the ...

How to Make a Pinhole Projector There are safe ways to view the sun. The simplest requires only a long box (at least six feet long), a piece of aluminum foil, a pin, and a sheet of white paper. The ...

Join us in exploring different ways to combine code with everyday materials as tools for creative expression! The Tinkering Studio is a Key Collaborator with the Lifelong Kindergarten Group at the MIT ...

Calculate Pi Emma Haruka Iwao (b. 1984) is a mathematician and computer scientist who broke the Guinness world record for calculating the most digits of π in 2019, and held that record until 2020.