Since winning the presidency, Donald Trump has exploited Twitter to make administrative announcements, weigh in on foreign policy -- and hurl barbs at anyone who crosses him. During his presidential transition, he has picked fights on Twitter with China, Mexico, Lockheed Martin, Toyota, the media, President Barack Obama, Arnold Schwarzenegger, Meryl Streep and the cast of "Hamilton," among others. -- Hillary Clinton eventually won the popular vote by nearly 2.9 million votes.
HOUSTON (AP) — Astronaut Gene Cernan traced his only child's initials in the dust of the lunar surface. Then he climbed into the lunar module for the ride home, becoming the last person to walk on the moon.