Climbing Mount Everest: 'You get addicted to it'

"You get addicted to it". That's why Alyssa Azar, the youngest Australian woman to climb Mount Everest, does it. The summit is nearly 30,000 feet above sea level, on the border between Nepal and China. The tallest mountain in the world, Everest is also one of the most popular goals for climbers. Nearly a thousand people try every year, although only about half make it, and around 300 people have died in the attempt. Alyssa Azar spoke to us about the highs and the lows of mountaineering.