Coupled Challenges and Solutions for Stressed Megacities AO TONG CS-A:Waste management in megacities for SP-2 sustainability and energy recovery Public Health CS-B:Challenges of Test Bedding emerging contaminants on CS-B environmental sustainability in Environment Energy megacities SP-1:Mission- CS-A oriented system model for megacity Test Bedding sustainability Waste SP-2:Distributed clouds:Peta-scale urban sensing and data management SP-1Coupled Challenges and Solutions for Stressed Megacities Public Health Energy Waste CS-B CS-A SP-2 SP-1 Environment CS-A: Waste management in megacities for sustainability and energy recovery CS-B: Challenges of emerging contaminants on environmental sustainability in megacities SP-1: Mission￾oriented system model for megacity sustainability SP-2: Distributed clouds: Peta-scale urban sensing and data management