Silver Spring Networks

Cisco is expanding its foray into the smart grid with plans to acquire Arch Rock. The San Francisco-based startup is developing wireless-networking equipment for the electrical grid.

Al Gore's latest eco-treatise, Our Choice: A Plan To Solve the Climate Crisis, is set to hit stores Tuesday. The former vice-president says he will donate 100 percent of the proceeds from the book to the the Alliance for Climate Protection, a green group. But it turns out that the book money is...