A young onion picker in Rio Grande Valley, Tex., in 1979. She looks up to the sky.

Berkeley professor’s photography revisits harsh history of U.S. child labor

black and white photo of Hitler admiring a tabletop model of a VW bug

Opinion: German automakers must be held accountable for their Nazi pasts

 two huge machines for deep-sea mining

Kammen: Urgent need for moratorium on deep-sea mining