science.kqed.org

d5VB TIL when building the Golden Gate Bridge, the lead structural engineer insisted on the installation of a safety net even though its $130,000 cost was deemed exorbitant. Over the four years of its construction, the net saved 19 men, who named themselves the “Halfway to Hell Club.”
mrav TIL no wild orca has ever killed a human.
BKZK TIL that scientists have genetically altered chickens to express DNA that their dinosaur ancestors once possessed. Eventually, they grew teeth.