https://youtube.com/watch?v=uWjGGvY65jkBerlin is becoming a "Sponge City" designed to tackle two issues - heat and flooding - by imitating nature. Video by Gloria Kurnik https://www.bloomberg.com/news/videos/2017-08-18/sponge-city-making-berlin-cooler-video ---------- Like this video? Subscribe to Bloomberg on YouTube: http://www.youtube.com/Bloomberg?sub_confirmation=1 Bloomberg is the First Word in business news, delivering breaking...