Canadian Press: Twice a day, Elena Quispe draws water from a spigot on the dusty fringe of this city, fills three grimy plastic containers and pushes them in a rickety wheelbarrow to the adobe home she shares with her husband and eight children. But the water supply is in peril. El Alto and its sister city of La Paz, the world’s highest capital, depend on glaciers for at least a third of their water – more than any other urban sprawl. And those glaciers are rapidly melting because of global …