"TIL that consumption of the Australian aquatic fern called Nardoo can cause you to starve if improperly prepared. The plant contains vast quantities of an enzyme that obliterates thiamine (vitamin B1), making your body unable to unlock energy from food, even if eating a full nutritious diet."

"TIL of a plane who made a forced landing on a Greenland ice cap in Nov. 1942. In attempting their rescue, 6 more planes either also stranded or crashed and it would take the survivors 5 and a half months of sheltering on the glacier until they were all rescued."

"TIL about Narbacular Drop, a puzzle game made by students at DigiPen University of Technology, which emphasized the usage of portals to solve puzzles; the entire team was later hired by Valve Software and would go on to make Portal"