Light in High Places

Hutto is living in a tent at twelve thousand feet, where blizzards occur in July and where human wants become irrelevant and human needs can become a matter of life and death—to study the Rocky Mountain bighorn sheep. The population of these rare alpine sheep is in decline. The lambs are dying in unprecedented numbers. Hutto’s job is to find out why.

For months at a time, he follows the bighorn her...