“Catalyst” follows climatologists who are tracking the rapid rise of a car’s interior temperatures during the summer.
Season eight finds Doc Martin and Louisa living together again with their infant son — but even after repairing their relationship, their problems are far from over. "Doc Martin" airs Saturdays at 7 p.m., beginning June 15.
Competitive ballroom dancing returns to Arizona PBS with the 2017 World DanceSport GrandSlam Series. The best competitive dancers in the world vie for the most prestigious titles on Sundays at 3 p.m., beginning July 7.
“Molly of Denali” follows feisty 10-year-old Molly Mabrary and her adventures while living with her family in the fictional village of Qyah, Alaska. The series premieres July 15 on Arizona PBS.