A haze of smoke hangs over Athens early Jan. 3. The hazy conditions result from residents' switch to wooden stoves and fireplaces for heating, as many households can no longer afford to buy heating oil. Petros Giannakouris/AP hide caption

Longtime CIA agent and counterintelligence agent Jeanne Vertefeuille, pictured at center, was instrumental in uncovering undercover agents, or moles, within the organization in the 1980s and '90s. Central Intelligence Agency hide caption

Parquet Courts Heather Strange hide caption

AeroVironment's Raven drone is used for military surveillance and can be launched by hand. Courtesy of AeroVironment Inc. hide caption

Forty years after Roe v. Wade --€” and nearly 50 years after the start of efforts toward legalizing abortion €-- the debate still carries on, with younger generations ready to take up the cause for both sides. Mark Wilson/Getty Images hide caption

Dr. Dre (right) with Snoop Dogg, who played a starring role on Dre's The Chronic. Here they pose after a 1993 performance in Chicago. Raymond Boyd/Getty Images hide caption