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Giant ‘Haboob’ dust storms cause EPA to relent on Arizona anti-pollution plan (access required)

Giant ‘Haboob’ dust storms cause EPA to relent on Arizona anti-pollution plan <span class="dmcss_key_icon"><img alt="(access required)" src="/files/2013/12/lock1.png" border=0/></span>

Like a toddler with a water hose, the monsoon brings the rain in bursts, unevenly spraying but never quite quenching Arizona’s dry earth.

Often, the season’s thunderstorms unleash an apocalyptic scene — a wall of dust, with its tinge of yellow and red against the setting sun, rushing to swallow the Valley whole and enveloping its homes with its unwelcome sandy mist. Free from crippling polar vortexes or earthquakes, the sandstorms are nature’s reminder to Arizona of its sweeping powers.

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Air: What’s in a grade? (access required)

Although Maricopa County was assigned a grade of “F” for ozone pollution and a grade of “C” for 24-hour particulate pollution in the American Lung Association’s recently released 2012 State of the Air Report, air quality professionals contend that the simple letter grade doesn’t tell the entire story of the Valley’s air, and that progress has been made during recent years in reducing air pollution.

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