Notebook
- Materials Science
50 years ago, bulletproof armor was getting light enough to wear
In 1969, bulletproof armor used boron carbide fibers. Fifty years later, bulletproof armor is drastically lighter and made from myriad materials.
- Physics
A computer model explains how to make perfectly smooth crepes
Here’s how to prepare thin pancakes that are perfectly smooth, according to science.
- Astronomy
50 years ago, scientists wanted to build solar panels on the moon
In 1969, scientists proposed building solar panels on the moon to convert the sun’s energy into electricity that can be used on Earth.
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