Van Gogh's "The Starry Night" is arguably his most famous painting. It displays the night sky as viewed from his hospital window and was painted from memory, many years after his actual stay there.
It is common myth that despite painting over 2,000 works of art, Van Gogh only sold one painting in his lifetime. While this is not likely true, it is true that he received very little recognition for his art and was not considered a success during his lifetime.
Paper is created by pressing together moist fibers and drying them into flexible sheets. Tissue paper, like that seen in this episode, is typically made out of recycled paper.
It is estimated that 1 in 3 people have an active allergy. A statistic that has been on the rise over the past few decades.
The Big Dipper is also known as the Plough, the Saptarishi, and Ursa Major.