Premieres Wednesday, May 11, 2022 from 9-11 p.m. and Sunday, May 15 from 2-4 p.m. on KPBS TV + May 15 from 9-11 p.m. on KPBS 2 / On demand with PBS Video App. A new two-part special, NOVA explores how a wealth of newly uncovered fossils may provide a never-before-seen glimpse of events on the day an asteroid struck Earth, ending the age of the dinosaurs.