In this 1972 archival photo, host Linda Wertheimer holds a grease pencil to mark audio tape for editing. The term "blading" refers to when cuts to tape were made manually via razor blade.
An Innovation Center for U.S Dairy report found that 7 percent of Americans think chocolate milk comes from brown cows, but a spokesperson says the survey was never intended to be scientific.
Andreas Strauss / LOOK-foto/Getty Images/LOOK
In this 2010 photo, steam rises from towers at an Exxon Mobil refinery in Baytown, Texas. Recently leaked memos from Exxon Mobil have shown that the company knew about climate change as early as 1981 but still funded deniers.
Pat Sullivan/ASSOCIATED PRESS