True or False: More than 2/3 of the 37 cities in the Global Environmental Monitoring System have declining sulfur and particulate levels.

The statement is accurate because it reflects the observed trend of decreasing sulfur and particulate pollution levels in a significant majority of the cities monitored by the Global Environmental Monitoring System. This decline is often a result of enhanced environmental regulations, improved technology, and increased public awareness, leading to successful strategies for air quality management. These declining levels are critical as they contribute to better air quality and overall public health. Moreover, the successful reduction of these pollutants is a positive indicator of progress in addressing air pollution globally. As such, the assertion that more than two-thirds of the cities show this decline is supported by data and reflects effective environmental policies.