These Vintage Photos Prove That Roller Derby Has Always Been Cool

Building the Industry

Seltzer began to hold his own dance marathons, dubbed "walkathons" due to the fact that contestants would usually just shuffle around for the duration of the contests. Seltzer's walkathons could last as long as 40 days with hundreds of unemployed contestants hoping to win cash prizes.

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The More You Know

  • The Crown Jewels contain the two biggest cut diamonds on Earth.
  • One area of Canada has a weaker gravitational pull than the rest of Earth.
  • The Canary Islands are named after dogs, not birds.
  • The richest superhero is actually Black Panther, who has an estimated of $500 billion, whereas Tony Stark is worth $100 billion and Bruce Wayne $80 billion.
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