Wan Gang

Two decades earlier, Wan Gang had persuaded China's State Council to throw its vast power behind the risky, unproven technology of electric cars.

Social media has profoundly changed gang activity in the United States, according to a new report by a Chicago nonprofit. Of particular concern, researchers say, is how social media often appears to amplify and speed up the cycle of aggression and violence.

Two decades earlier, Wan Gang had persuaded China's State Council to throw its vast power behind the risky, unproven technology of electric cars.

Social media has profoundly changed gang activity in the United States, according to a new report by a Chicago nonprofit. Of particular concern, researchers say, is how social media often appears to amplify and speed up the cycle of aggression and violence.