Amazon Facts

In 2012, a man ordered a TV on Amazon, but got a semi-automatic assault rifle instead.

In 2011, Amazon briefly sold more e-books than print books, but the trend reversed—today they sell three times more print books than e-books.

The most powerful electric eel is found in the rivers of Brazil, Columbia, Venezuela, and Peru, and produces a shock of 400-650 volts.

Giant river otters still exist in three remote river systems in South America. They can grow to almost 6 feet in length, hunt in packs, and even take on caimans.

During spring tides, a tidal bore called the Pororoca rolls up the Amazon River, creating a continuous wave up to 4 meters high that can be surfed for over 12 kilometers. The phenomenon is strongest between February and March when Atlantic tides push ocean water upstream against the river's flow.