The Great Wall of China Is Not Visible from Space

In Latin, 'trivium' (tri + via = three + road) referred to the junction where three roads met — a crossroads or small public square where people gathered to gossip and exchange minor information. From this, 'trivialis' came to mean 'commonplace, found everywhere'. In the medieval curriculum, 'trivium' also named the three foundational liberal arts: grammar, rhetoric, and logic.

In 1995, Pierre Omidyar created 'AuctionWeb' (later renamed eBay) and listed a broken laser pointer as a test. It sold for $14.83. When he contacted the buyer to confirm they understood it was broken, the buyer replied: 'I'm a collector of broken laser pointers.' Omidyar called it the moment he realized there was an online market for everything.

The Olmec, Maya, and Aztec civilizations drank cacao for over 3,500 years — but their version was cold, bitter, and spiced with chili and cornmeal, often frothed by pouring between vessels. Europeans added sugar and heat only after the 16th century. The word 'chocolate' comes from the Nahuatl word 'xocolatl'.

In 1787, clockmaker Levi Hutchins of Concord, New Hampshire, built the first known personal alarm clock. However, it could only ring at 4:00 AM — the time he needed to wake up for work. He never patented or commercialized the invention. The first adjustable alarm clock was patented in 1847 by Antoine Redier in France.