Barack Obama is the first sitting U.S. president to visit a federal prison.
Chipotle has a DJ on the payroll to curate its in-store music, which is why you won’t hear any Billboard chart toppers while eating there.
Cuttlefish can change color almost instantaneously to match their surroundings and avoid predators, despite being colorblind.
Rich kids can drop out of high school and perform as well as poor college graduates when it comes to their future income, a study found.
Australian drinkers and drug users are taking an estimated 11.5 million sick days a year, costing the economy $3 billion (US$2.2 billion).
