Now Mayor Ahmed Aboutaleb has plans to make Rotterdam the most sustainable port city in the world by cutting its carbon footprint by 50 percent . Rotterdam 's population totals 615,000 . 90 % of the city is below sea level and is therefore facing a high risk of flooding . The Dutch government has been trying to find ways to protect this area from rising seas, but so far they have not found any effective solutions.
Rotterdam 's population totals 615,000 . 90 % of the city is below sea level and is therefore facing a high risk of flooding . The Dutch government has been trying to find ways to protect this area from rising seas, but so far they have not found any effective solutions.