Lesson #139

New Boeing jets grounded after second crash in just five months

A problem with the automation software on Boeing's 737-MAX, the newest version of its popular jet, has caused two fatal crashes in just five months, investigators think. The latest crash, of an Ethiopian Air jet just last week, killed 157 people after it went down six minutes after taking off. The problem was a new stabilization system, which is also believed to be behind a crash in Indonesia in October. In response, many world governments have grounded the jet while Boeing scrambles to find a software solution. Plus, learn the English phrase "double-edged sword."