Particles in the air caused by pollution have been linked to heart attacks, and the SMALLEST particles do the most damage!

A new study reveals that the smallest particles from vehicle emissions may be the most damaging, since they trigger plaque buildup in the arteries, which can lead to heart attacks and strokes. Researcher Jesus Araujo says, “It appears that the smallest air pollutant particles, which are the most abundant in an urban environment, are the most toxic.” These nanoparticles are the size of a virus or molecule, or about one-thousandth the size of a human hair. The EPA currently regulates fine particles, which are the next size up, but doesn’t monitor particles in the nano or ultrafine range. These particles are too small to capture in a filter, so new technology must be developed to stop them from getting into the atmosphere.

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