Transcript The currency in the United States is the dollar. You probably already knew that. It is also the name of the currency in over 20 other countries including Canada, Australia, New Zealand, and Singapore. What is a dollar exactly, and why is that the name of the currency in these countries? Learn more about …
Transcript For the last 300 years, a debate has raged between mathematicians about who should be credited with the invention of calculus: Sir Isaac Newton or Gottfried Wilhelm Leibniz. The sides of the debate have mostly been based on geography with English mathematicians advocating for Newton, and Continental Europeans siding with Leibniz. Learn more about …
Transcript We are often told that schools are where you learn how to think, not what to think. Sadly, almost no school curriculum deals directly with logic and the closely related subject of logical fallacies. Fallacies are all around us. Just read something online or watch a few minutes of television and you’ll probably encounter …
Transcript At the 1968 Olympics in Mexico City, Dick Fosbury won the Gold Medal in the men’s high jump. He did it by jumping an Olympic record 2.24 meters or 7 feet, four inches. What was remarkable about his accomplishment wasn’t the height he jumped, but how it did it. He didn’t just win a …
Transcript Thomas Edison is often credited with the invention of the light bulb. Yet, nothing could be further from the truth. If there is any modern invention that really can’t be attributed to a single person, it would be the incandescent lightbulb. Learn about the history behind the incandescent light bulb, perhaps the most significant …
Transcript Eliud Kipchoge is unquestionably the greatest marathon runner in history. He’s won an Olympic Gold Medal, holds the world’s record, and has won 12 of the 13 marathons he has ever entered. However, there was one accomplishment that had been out of reach for Kipchoge and every other marathoner: The 2-hour marathon. On October …
Transcript Today the world can communicate with text, images, audio, and video at the speed of light. Most of this is done via undersea fiber optic cables which connect the various continents to each other. All of this modern long-distance communication has its start with the first transatlantic telegraph cable. The first long-distance submarine communications …
Transcript Many people think that politics and elections in the United States are the most controversial they have ever been. History, however, begs to differ. Perhaps the oddest and most controversial presidential election in American history was the election of 1824. It is an election that doesn’t get a lot of attention given who won …
Transcript People didn’t travel much in the ancient world. But for those who did, they developed the ancient equivalent of guidebooks. These were often lists of manmade sites and attractions that any traveler should take the time to see. Over time, one such Greek list was written down, and it became known to us as …