A whistleblower at data analytics company Cambridge Analytica says the UK firm received more than 50 million Facebook user profiles without user consent and the data was later used for political gain. CNET's Ian Sherr explains.

ReRecently named one of the 40 most influential nature photographers in the world by Outdoor Photography Magazine, Peter Essick has been a frequent contributor to National Geographic Magazine for 25 years. At National Geographic he has produced 40 feature articles specializing in stories on nature and the environment. He is the author of two books, Our Beautiful, Fragile World and the Ansel Adams Wilderness. He has a bachelor's degree in business from the University of Southern California and a master's degree in photojournalism from the University of Missouri. He lives in Stone Mountain, GA with his wife, Jackie and son, Jalen.cently named one of the 40 most influential nature photographers in the world by Outdoor Photography Magazine, Peter Essick has been a frequent contributor...