Could a credit-card chip be the secret to security?; Extreme weather brings frigid temps and record highs; Marines set to rescue Americans in Sudan; Health care enrollment deadline extended; Spacewalk set for tomorrow; Imprisoned Pussy Riot members freed; Study: Pregnant women don’t have to avoid nuts; AK-47 inventor Mikhail Kalashnikov dies; John Eisenhower dies at age 91; Farewell, Candlestick Park; Window washers bring Christmas cheer to sick kidsDec. 24, 2013
