Heroes save lives at house fire and railroad crossing.  Teens solve centuries-old mathematics problem.  Baseball fan beats the odds catching back-to-back foul balls.  Teen earns doctoral degree at age 17.  Driverless robo taxis tested.  Surplus EV's parked at a former mall.  Worst Wastefulness We Witnessed This Week Award.  Mail carrier clocked going 100-plus-mph in a US Mail truck.   Bear air drop and bear family pool party.  World record attempt for most dinosaurs in one place.