About 3,000 of Nepal's more than 10,000 Sherpas reside in the Khumbu valley, the gateway to the southern side of Mount Everest. Because their physical prowess at high altitudes is unmatched ...

Everest (28 deg North ... "We live submerged at the bottom of an ocean of the element air." The Earth's gravitational field is pulling on air, and this pull, or "pressure" of air, is called ...