NBC Chicago on Instagram: "A huge sinkhole opened up in the middle of the street on Chicago's South Side this morning during rush hour traffic. Video shows crews working to fix the hole at 111th and Whipple. #sinkhole #traffic #chicago #southside #rushhour"

Knowledge Matrix on Instagram: "This escalator suddenly sped up without warning. A normal ride turned into panic within seconds. The incident occurred at a university in Bangladesh. A technical malfunction caused the escalator to accelerate beyond its normal speed. Escalators depend on motor controls, speed governors, and braking systems. Sudden acceleration points to a failure in one of these safety mechanisms. As the speed increased, students struggled to keep balance. Many rushed to exit as f