World's most extreme roller coaster closes after hospitalizing four riders

In Fujiyoshida, Japan, a roller coaster engineered to surpass the forces of rocket launches has been silenced after four riders suffered serious spinal fractures within a single year. The Do-Dodonpa, which flung human bodies from stillness to 180 kilometers per hour in under two seconds, had long invited the question that extreme engineering always eventually asks: how much can a person endure before the machine becomes a hazard? Authorities in Yamanashi Prefecture have now ordered the ride closed, placing the pursuit of spectacle in direct confrontation with the quiet, irreversible weight of