Sure, carbon and oxygen are two of very most fundamental building blocks of all life on Earth — but what have they done for you lately? With this free video guide, you'll learn how to build a safe, simple carbon-dioxide-powered bottle rocket with baking soda and a spent soft plastic waterball.
Just updated your iPhone to iOS 18? You'll find a ton of hot new features for some of your most-used Apple apps. Dive in and see for yourself:
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