only-firefox-HISTORY
-- https://www.youtube.com/watch?v=BRSkRlPa5_E --
-- How the Earth Was Made: The Most DANGEROUS Geological Mysteries *Epic Marathon* --
-- https://www.youtube.com/watch?v=98bGheb22UU --
-- Volcanic Fury! EARTH'S DANGEROUS RING OF FIRE *3 Hour Marathon* | How the Earth Was Made --
-- https://www.youtube.com/watch?v=Q0ict6tup04 --
-- The VIOLENT & EXTREME Birth of Planet Earth *2 Hour Marathon* | How the Earth Was Made --
-- https://www.youtube.com/watch?v=io0Vq4KuAPw --
-- UFO MYSTERIES EXPOSED! *6 Episode Mega-Marathon* | Unidentified: Inside America's UFO Investigation --
-- https://www.youtube.com/watch?v=xwfs3YeCOJ8 --
-- UFO Files: They're Among Us! UNBELIEVABLE ALIEN EVIDENCE *2 Hour Marathon* --
-- https://www.youtube.com/watch?v=LvPuoqYDVLo --
-- War Intensifies: Bloody Battles on Road to Independence | The Revolution | *4 Hour Marathon --