Nicholas Nixon

Stanford heat mirror

Could mirrors reduce the need for air conditioning around the world?

Global Scan

Air conditioning is responsible for some 15 percent of building energy use. What if that could be eliminated completely — using mirrors? Scientists at Stanford University think they may have found a way. That story and more in today’s Global Scan.

Dr. Robert Sappenfield with his son Bob, Dorchester, 1988

Why this photographer takes portraits of the dying

Arts