Why Do Escalator Steps Have Teeth?

Transcript

• On October 23rd, 2018, thousands of football fans were making their way to the game in Rome. Excitement for the game was high, and the fans began to chant and sing. At 7:03 pm, around 50 people were riding the long escalator down to the platform, but within 30 seconds, the crowd had swelled to nearly double that. Everything seemed fine, but insid... Read More