Agence France-Presse: Standing in the Himalayan valley of Langtang, Rinjin Dorje Lama remembers where he used to play as a child in the 1960s. “When I was a kid, it was a lot longer,” said Lama, pointing at the Lirung glacier surrounded by snowy peaks on Nepal’s northern border with Tibet. “We used to play on the glacier, and it came right down to the monastery, but now it’s about two kilometres (1.2 miles) further back.” Temperatures in the Himalayas are rising by around 0.06 degrees Celsius …