sherpas

The job of guiding climbers up the Himalayas has brought money and development to their communities, but little glory for the Sherpas.

A study adds to evidence that it's a matter of blood and genes. "Hopefully, there will be huge medical implications," says one researcher.

Nepal's sherpas and porters carry loads that can weigh more than they do. A new study tries to figure out how they do it.

Early reports are that at least eight climbers and/or Sherpas have been killed at Everest Base Camp. Others are trapped higher up on the world's tallest peak.

The dead include four Canadians, two Poles and an Israeli. The trekkers were caught out in unseasonable conditions around Mount Annapurna, the world's 10th-highest peak.