Destin Wilson Sandlin[1] (born September 17, 1981) is an American engineer and science communicator who produces the video series Smarter Every Day[4][5] on his YouTube channel of the same name, which was launched in 2007.

Sandlin also runs the YouTube channels The Sound Traveler, Smarter Every Day 2, and a podcast called No Dumb Questions with his friend Matt Whitman.

[6] In early 2016, Sandlin was one of three YouTube personalities chosen to conduct a one-on-one interview with then-president Barack Obama[7] after his final State of the Union address.

[citation needed] Episodes of Smarter Every Day feature Sandlin as the host and narrator, and revolve around scientific exploration and discovery.

Other notable topics have included the submarine USS Toledo (SSN-769), the effects of hypoxia on the human brain, the Prince Rupert's drop, the physics of potato guns, the usefulness of snatch blocks, and a nearly-impossible to ride bicycle whose wheel steers in the opposite direction of its handle bars.