Extensive system will be built by 2020 and include improved satellites, remote sensors

China will build a comprehensive network to detect pollution of the land, sea and air by 2020, employing satellites, drones and remote sensors to monitor the environment.

The national leadership approved the network plan in July, saying the government will lead the monitoring, share information among departments and regions, and be held accountable if violations are found, the Ministry of Environmental Protection said on Tuesday.