Washington, UNITED STATES
An orangutan shields itself from the sun at the National Zoo in Washington
An orangutan holds a paper bag over its head under the hot sun at the National Zoo in Washington September 4, 2014. After a mild summer, the nation's capital is experiencing late season heat wave with temperatures up to around 90 degrees Fahrenheit .
REUTERS/Kevin Lamarque (UNITED STATES - Tags: SOCIETY ANIMALS ENVIRONMENT TPX IMAGES OF THE DAY)