Urban wetlands breathe life into Sri Lanka’s capital city -- Colombo is built on and around wetlands, which keep people safe from floods, cool the air, filter polluted water, provide food and medicines, fight climate change, and provide city dwellers respite from the urban jungle. However, during the last 30 years, an estimated 40% of the wetlands in Colombo has been lost due to direct and indirect impacts of urbanization. If Colombo were to lose all its precious wetlands, the city would be flooded annually costing as much as 1% of its GDP in flood damage...