Engineers Drained the Niagara Falls and Uncovered Its Dark History

Some Treasures Were Revealed

It took a while, but the waters did recede. At first, the waters revealed millions of coins from the past hundred years. Not only were these a cool time capsule, but it was a money haul as well! Folks flocked to the receded waters to collect all of the coins that they could carry.

The More You Know

The smallest unit of measurement in the universe is the Planck length.
The world's largest Barbie collection includes more than 15,000 dolls.
Mount Everest is bigger now than the last time it was measured.
"E" is the most common letter and appears in 11 percent of all english words.

Post originally appeared on Upbeat News.