Aficionados line up outside Hot Doug's, a gourmet hot dog diner in Chicago, in May. Owner Doug Sohn has announced that he will shut the doors in October after nearly 14 years.
M. Spencer Green/AP
hide caption
First the cathedral and then the cafe? Experiences like travel bring greater satisfaction than material goods, researchers say.
Dangubic/iStockphoto
hide caption
Angelo Mosso's "human circulation balance" machine worked like a seesaw to measure blood flow changes to the brain.
Sandrone et al., 2014, Brain
hide caption