Robert Downey Jr. took to the stage at Amazon's Re:MARS conference to talk about his goals for the future of the environment. The actor famously portrayed Tony Stark/Iron Man on the big screen, and in recent film Avengers: Inifinity War utilised a nanotechnology suit of armour in the box office hit.

Downey Jr. explained that he was launching a new foundation that would harness robotics and nanotechnology to clean up the planet. The Footprint Coalition, according to Variety, will begin operations by April 2020, with the stated aim of tidying up our home in the next decade.

The actor was there to open Amazon's Las Vegas based conference covering MARS, short for Machine learning, Automation, Robotics and Space. Downey Jr. didn't explain how the Footprint Coalition would achieve its goals, or who it will partner with to achieve its aims. He was at the event mostly to speak about the benefits of AI -- a subject he is relatively familiar with, as the host of a documentary on the topic.

Footprint Coalition's website is, as of right now, simply a holding page asking folks to sign up to learn about the next steps on "this environmental journey." Downey Jr. joins a number of other celebrities with their own environmental foundations, including Leonardo DiCaprio, Mark Ruffalo and Matt Damon.