1.1421358-1272126802
FILE - In this Friday, April 26, 2013 photo, actor Alan Alda listens during an interview at Stony Brook University, on New York's Long Island. Alda has a new challenge for scientists: Explain sleep to an 11-year-old. He started the annual “Flame Challenge” contest in 2011. It asks scientists to explain complex concepts in ways a child can understand. Scientists have until Feb. 13, 2015 to submit their answers about sleep in writing, video or graphics. (AP Photo/Richard Drew, File) Image Credit: AP

Actor-turned-part-time professor Alan Alda has a new challenge for scientists: Explain sleep to an 11-year-old.

The TV and film star best known for his role in the 1970s sitcom M.A.S.H. has had a lifelong interest in science.

The New York native teaches at the Alan Alda Centre for Communicating Science at Stony Brook University on Long Island.

He started the annual ‘Flame Challenge’ contest in 2011. It asks scientists to explain complex concepts in ways a child can understand.

The first year sought an answer to “What is a flame?” That was followed by challenges to explain time and colour.

Scientists have until February 13 to submit their answers about sleep in writing, video or graphics.

The winning written and video or graphic entries will receive $1,000 (Dh3,673) cash prizes.