and how environmental disasters of his day inspired the creation of Earth Day in 1970. On December 7, 1972, Apollo 17 astronauts captured a now-iconic image of Earth, sometimes called the “blue marble ...

All told, Eugene Cernan, who was the last man on the moon, spent 22 hours over three days walking and driving around Taurus-Littrow, Apollo 17's landing site on the edge of the Sea of Serenity ...