sentences:  Since June this Urban Lung Network has been cleaning 3 million cubic meters of air each day, for a total of hundreds of millions of cubic meters of contaminated air to date and an effective reduction of a 35% in the amount of toxic particles PM2.5 and PM10 floating in the air of Mexicali at the end of October 2019, as was reported in a study presented to the California Air Resources Board by the head of the local nonprofit EconCiencia y Salud AC.The nonprofit Pulmon Urbano AC relied on independent and internationally well known companies such as PurpleAir  and VisualAir , to show, in real time, the daily reduction of polluted air in Mexicali achieved by the Urban Lung Network.Celorio is also a writer and publisher of several books.