Engineers Drained the Niagara Falls and Uncovered Its Dark History

Building a Cofferdam

Within the next year, engineers brought in 27,000 tons of material in order to build a cofferdam. The dam would cover 600 feet of the waterfall, which would be enough to investigate the bizarre accumulation of rocks at the bottom. Locals were worried that this would halt tourism, but it actually did the opposite...

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The More You Know

  • Finland has more saunas than cars.
  • T-shirts were originally made for unmarried men who didn't know how to sew buttons on collared shirts.
  • But the loudest animal relative to its size is a water bug.
  • The world's most toxic mineral is cinnabar.
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