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Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:00.75,0:00:02.05,Default,,0000,0000,0000,,Air quality explained.
Dialogue: 0,0:00:03.80,0:00:06.78,Default,,0000,0000,0000,,Air quality is a measure of how clean or polluted the air is.
Dialogue: 0,0:00:07.87,0:00:09.31,Default,,0000,0000,0000,,The two main culprits of poor air
Dialogue: 0,0:00:09.32,0:00:12.25,Default,,0000,0000,0000,,quality are particulate matter and ground-level ozone.
Dialogue: 0,0:00:13.78,0:00:17.51,Default,,0000,0000,0000,,Particulate matter or airborne particles includes dust, dirt, soot,
Dialogue: 0,0:00:17.62,0:00:18.40,Default,,0000,0000,0000,,and smoke.
Dialogue: 0,0:00:19.22,0:00:20.84,Default,,0000,0000,0000,,These particles are so small that they
Dialogue: 0,0:00:20.85,0:00:23.43,Default,,0000,0000,0000,,can be inhaled causing serious health problems.
Dialogue: 0,0:00:27.01,0:00:29.83,Default,,0000,0000,0000,,The smallest are a fraction of the size of a human hair,
Dialogue: 0,0:00:29.84,0:00:31.53,Default,,0000,0000,0000,,even smaller than grains of sand.
Dialogue: 0,0:00:34.38,0:00:38.29,Default,,0000,0000,0000,,Ground-level ozone, on the other hand, is a gas and the main ingredient in smog.
Dialogue: 0,0:00:39.20,0:00:41.14,Default,,0000,0000,0000,,It forms when certain pollutants chemically react
Dialogue: 0,0:00:41.15,0:00:43.02,Default,,0000,0000,0000,,in the presence of heat and sunlight.
Dialogue: 0,0:00:43.98,0:00:46.96,Default,,0000,0000,0000,,Even low concentrations can trigger a variety of health problems.
Dialogue: 0,0:00:48.69,0:00:50.30,Default,,0000,0000,0000,,It can cause respiratory issues,
Dialogue: 0,0:00:50.31,0:00:53.50,Default,,0000,0000,0000,,hospitalization for heart or lung diseases, and even death.
Dialogue: 0,0:00:53.86,0:00:59.06,Default,,0000,0000,0000,,The EPA estimates that poor air quality causes more than 100,000 deaths in the US annually.
Dialogue: 0,0:00:58.34,0:00:59.06,Default,,0000,0000,0000,,
Dialogue: 0,0:00:59.56,0:01:00.62,Default,,0000,0000,0000,,Seniors, children,
Dialogue: 0,0:01:00.84,0:01:03.74,Default,,0000,0000,0000,,and those with compromised immune systems are especially at risk.
Dialogue: 0,0:01:04.91,0:01:06.41,Default,,0000,0000,0000,,How can you protect yourself?
Dialogue: 0,0:01:08.17,0:01:11.81,Default,,0000,0000,0000,,Outdoor activity and exercise of all kinds can help your heart stay healthy
Dialogue: 0,0:01:11.92,0:01:12.79,Default,,0000,0000,0000,,and resilient,
Dialogue: 0,0:01:13.55,0:01:15.68,Default,,0000,0000,0000,,but stay inside when the air quality is poor.
Dialogue: 0,0:01:16.95,0:01:19.45,Default,,0000,0000,0000,,If you must go out, limit your time outside.
Dialogue: 0,0:01:22.55,0:01:26.00,Default,,0000,0000,0000,,The air quality index, or AQI, reports the daily air quality.
Dialogue: 0,0:01:26.11,0:01:28.26,Default,,0000,0000,0000,,It tells you how clean or polluted your air is
Dialogue: 0,0:01:28.27,0:01:30.88,Default,,0000,0000,0000,,and what associated health effects might be a concern for you.
Dialogue: 0,0:01:30.60,0:01:30.88,Default,,0000,0000,0000,,
Dialogue: 0,0:01:31.29,0:01:34.73,Default,,0000,0000,0000,,See the current AQI for your area at airnow.gov.