“Belfast” opens, literally, with a bang. Kenneth Branagh’s memoir film of his childhood in Northern Ireland begins with a brief modern-day prologue and then thrusts us into the world of 9-year-old ...

China’s railway researchers claim to have slashed the low-frequency shock waves that erupt when a about 370 mph (600 km/h) magnetic-levitation train bursts out of a tunnel. The breakthrough centers on ...