This is junk science because…
Researchers recently calculated that urban forests help save one or more people from dying every year in each of 10 major cities studied.
Trees growing in cities help clean the air of fine particulate air pollution — soot, smoke, dust, dirt — that can lodge in human lungs and cause health problems. Trees clear 71 tons of fine particulate matter (PM2.5) from Atlanta’s air annually. And they suck up enough pollution to save seven or eight lives every year in New York City.
[h/t Climate Depot]