It was only 50 years ago, on July 20th, 1969, that Buzz Aldrin and Neil Armstrong became the first humans to actually set foot on the lunar surface -- something that just ten years prior had been unthinkable. More than 600 million people around the world listened as Armstrong spoke these immortal words: "One small step for man, one giant leap for mankind." Watch the clip to hear Glenn tell the story and bring the historic day to life.

Was President Trump's "go back" tweet to "the squad" of far-left congresswomen racist, or was he just saying: "Hey, if you don't like our country, then leave?" Bill O'Reilly, whose new book about Donald Trump is due out this fall, joined Glenn on the radio to offer an insider's take on the topic.