Puzzle 1: You are given nine gold coins that look identical. You are told that one of them is fake, and that this coin weighs ...

Halafian pottery shows that early agricultural societies practiced advanced mathematical thinking through plant-based art long before writing.

As New York City prepares for the 2026 New Year's Eve ball drop in Times Square, it's time to test your knowledge about the holiday tradition. Here's a closer look at how it all comes together, plus a ...