Topic: sleep studies

Man shutting off alarm clocks (Getty Images)

Why harsh alarms sounds make you cranky

Nicole Karlis
A red panda (also known as a lesser panda) relaxes in its enclosure at the Beijing zoo on June 24, 2013. The zoo grounds were originally a Ming Dynasty imperial palace and finally opened to the public in 1908. (MARK RALSTON/AFP/Getty Images)

In defense of napping

Nicole Karlis