year-old Nepalese climber scaled Mount Everest for the 21st time Wednesday, extending his own record for the number of successful ascents of the world's highest mountain, a spokesman said. Apa Sherpa, dubbed the “Super Sherpa” for the apparent ease with which he climbs the peak, reached the summit early Wednesday after climbing all night in conditions expedition organizers described as “perfect.” “He along with five other climbers had left camp four last night at 10pm and all of them made it to the top,” said Ang Tshering Sherpa, chairman of expeditions organizers Asian Trekking. All were climbing as part of the annual Eco Everest campaign, which aims to raise awareness of the impact of climate change on the Himalayas and remove the tons of rubbish left behind by previous expeditions from the mountain. Sherpa's first expedition to the summit was more than 20 years ago in 1990, and he has dedicated his last four climbs to the Eco Everest campaign. – Agence France