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The technology includes facial recognition software, cellphone tracking devices and drones.

A new study showed that laughter is a better indicator in determining friendships than even speech. Volunteers were able to pinpoint groups of friends versus strangers by listening to their laughter.

Gov. Andy Beshear said at least 74 people died statewide. The search for survivors has been slow going. Teams must move carefully and methodically as they pick through the rubble of demolished homes.

Photojournalist Margarito Martinez was shot dead this week in the northern border city of Tijuana, the second journalist to be killed in Mexico in just weeks.

A huge deal in the energy business is just the latest signal that natural gas is a hot commodity. One of the largest natural gas pipeline operators, Kinder Morgan, is buying its rival El Paso for $21 billion.

What actually happened on Independence Day? Did the rebels really wait until they saw the whites of British eyes at Bunker Hill? Historian Ray Raphael helps us debunk some of America's most popular — and believed — national creation myths.

Protests spread across Iran this past week after a young woman died in the custody of the so-called morality police. The government is planning to use the military to control the protests.

NPR's Leila Fadel speaks with Russian history professor Sergey Radchenko about Russia's response to Ukraine President Vlodomyr Zelenskyy's unannounced visit to Washington.

Some flights at Beirut's international airport are being affected by huge flocks of birds attracted to nearby trash or stray bullets from nearby suburbs - what some say signal the country's problems.

Sen. John McCain's recent emphasis on his approach to climate change signals a break with Bush administration policy. He hopes in part to sway Pacific Northwest voters — and independents elsewhere.