https://event-station-clf.pbs.org/live/pbs_natlive_safari/session_2/master.m3u8 (Note: This changes frequently.)
– may work worldwide:
https://psb-lh.akamaihd.net/i/pbs_PBSQM@123456/master.m3u8 Open Notepad (or any text editor) and paste: pbs m3u