Pupils work for greener future

LEUPP, Arizona - In the heart of Arizona's high desert, one of America's greenest schools is protecting the planet and its endangered culture by drawing inspiration from Native American values.

Classes at the STAR School, on the edge of the vast Navajo Nation reserve, are divided between English and - when the fast-paced curriculum allows - the local native language, known as din.

In kindergarten, a teacher shows a handful of toddlers traditional weaving, while the children of elementary school age, some in traditional braids, discuss the rudiments of fiction writing or computing.