Seven people have been injured, four critically, in a fire and explosions at a recycling yard in Hong Kong, forcing the evacuation of 300 people, including students and teachers on a nearby school trip. The blaze broke out at 11.01am on Thursday in a recycling yard at the junction of Ting Kok Road and Fung Yuen Road in Tai Po district. According to the Fire Services Department, it started in a scrap metal compactor housed inside a two-storey iron-sheet structure. The department deployed two...