Ancient Egyptians’ 12-Knot Rope Math That Changed The World

The Sound Secret Hidden Inside Ancient Greek Theaters

The Roman Soldier’s Rucksack

Damns have destroyed wild salmon populations in California and all over the west coast of America. Chinook salmon are on the brink of a population collapse, leading to salmon season being canceled again in California. The number one reason for this is dams. Dams block salmon runs from reaching their ancestral spawning grounds that they have used for thousands of years. That’s what makes Dry Creek so special. It’s one of the few creeks left in California where wild salmon get to spawn where they

Were You There

In the 1990s, John Sylvan was drinking 30-40 cups of terrible office coffee a day. He noticed the problem: make a whole pot and it goes stale, or nobody agrees on what type to brew. So he invented the K-Cup—a small plastic pod you pop in a machine for one perfect cup in 30 seconds. He teamed up with his college roommate Peter Dragone and named the company Keurig, Dutch for “excellence.” The plan was simple: offices skip Starbucks, get their coffee at work. It would actually be environmentally ne

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