Sentences with phrase «tracking air pollution levels»

Since the Columbia team started tracking air pollution levels in 1998, PAHs have declined, which Perera attributes to stricter anti-idling laws and phaseout of older diesel buses in New York City.

Emilia Simeonova of Johns Hopkins University in Baltimore, Maryland and her colleagues tracked air pollution levels in Stockholm, Sweden from 2004 to 2010.

Not exact matches

As Hurricane Harvey barreled into Houston, the state shut down 50 stationary air quality monitors that track pollution levels to protect the sensitive devices from the high winds and torrential rains that swamped the region.

According to the company (based on information from the World Health Organization and the EPA), it might be better for people to track the air quality around them instead of focusing on their fitness trackers, as some 92 % of the world's population lives in places where the air pollution exceeds the levels considered to be «healthy», and even indoor air quality can be worse than outside air quality.

It supports EPA efforts and activities to monitor air quality levels, estimate population exposure to air pollutants, examine the effects of air pollution on public health, track progress in improving air quality and reducing associated risks, and provide models, tools, and technical guidance to states.