Robert Downey Jr. Will Clean Up Environment Using Robotics

Robert Downey Jr. is planning to clean up the planet using nanotech. The 54-year-old Avengers: Endgame actor celebrated Amazon’s re:MARS conference as a keynote speaker – delivering the opening remarks – in the Aria Resort and Casino on Tuesday (June 4) in Las Vegas. PHOTOS: Check out the latest pics of Robert Downey Jr. During