It was the 75th anniversary of the Hiroshima bombing in Japan on August 6 this year and to mark the occasion student Anju Niwata, 18, and her Tokyo University professor Hidenori Watanave have colourised pictures of the devastation using artificial intelligence. Left: Smoke rises around 20,000 feet above Hiroshima, Japan. Bottom right: Two people walk on a cleared path through the destruction resulting from the August 6 detonation of the first atomic bomb in Hiroshima.