From table salt to snowflakes, and from gemstones to diamonds—we encounter crystals everywhere in daily life, usually cubic ...
With new technology, smarter tools, and a lot of patient digging, historians and archaeologists are uncovering marvels from every corner of the world. One day it’s an enormous thigh bone from a ...
In 490 BC, the Persian Army landed on the plain of Marathon, 25 miles from Athens. The Athenians sent a messenger named Feidipides to Sparta to ask for help. He ran the 150 miles in two days. The ...
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