If you want to climb the world’s tallest mountain, Nepal wants to see your résumé first. Turns out experience matters and for Nepal it looks like 7,000 meters. In a bold move aimed at improving safety and reducing the deadly traffic jams on Mount Everest,

Under the proposed rules, climbers must show proof of scaling a 7,000-metre (22,965 ft) mountain in Nepal before applying for an Everest permit.

An expedition is planning to take clients up the world's tallest mountain in record time with xenon gas. But some in the climbing and medical world worry it is an unnecessary gamble.