ÌÇÐÄ´«Ã½

A Singapore Airlines flight headed from London to Singapore made an emergency landing in Bangkok after hitting severe turbulence. One passenger, a 73-year-old man suspected of having a heart condition, died. Redmond Shannon reports on what the terrified passengers and crew endured during the mid-air scare, and Dawna Friesen explains what causes clear-air turbulence, and why it's expected to increase.