Four British men climbed Mount Everest and returned to London in under a week, a feat raising ethical concerns in the mountaineering world. Their rapid ascent involved using xenon gas to aid acclimatization to high altitudes, a practice currently under investigation by the Nepalese government. The expedition's success has sparked debate about whether performance-enhancing substances should be permitted in mountaineering, challenging traditional climbing approaches and raising questions about accessibility.

Prepared by Emily Rhodes and reviewed by editorial team.