Methanol economy advantages compared to a hydrogen economy: 1  Efficient energy storage by volume, as compared with compressed hydrogen. 2  A liquid hydrogen infrastructure would be prohibitively expensive. 3  Can be blended with gasoline (for example in M85, a mixture containing 85% methanol and 15% gasoline). 4  User friendly.
Two things contribute to air pollution that can cause an air quality alert: 1  Ground-Level Ozone â High-levels of ground-level ozone are frequently the cause of air quality alerts. 2  Particulate Matter â Particulate matter consists of pollutants such as dust, soot, ash and wood smoke.
Asthma Triggers. Acute asthma exacerbation is often caused by a particular trigger. Common triggers include allergens, exercise and poor air quality. Respiratory viruses, especially rhinovirus, cause the majority of asthma exacerbations in both children and adults. Changes in weather such as extreme heat or cold may also cause spasm of the airways.