Fastest Female Climber, Oldest American Return Safely from Everest’s SummitLast month, during a flurry of pushes to summit Everest, two climbers returned safely after setting records. Tsang Yin-hung, 45, of Hong Kong, set the record for the fastest climb from basecamp to summit by a woman—25 hours, 50 minutes. (The fastest by anyone is just under 11 hours by Lakpa Gelu, a Sherpa guide). The strong climber, and schoolteacher back home, was fortunate to pick the perfect time for her ascent. “I feel relieved because I can prove my work to my friends, to my students.”Arthur Muir (yes, Muir), at 75, became the oldest American to successfully scale the world’s highest peak.