Urban areas contribute 70 % of global CO2 emissions and consume a staggering 75 % of the world’s energy. This impact will grow due to rapid urbanization: by 2050, more than two-thirds of the world’s population – around 6.5 billion people – will call cities home. This will put enormous pressure on resources, requiring even more energy and intensifying the environmental footprint of our cities.

If we want a climate-resilient future, we need to transform our concrete jungles into sustainable, thriving urban ecosystems. But how do we get there, and what disruptive innovations will make it possible? (Zachary Smith, more at weforum.org)