SCIENCE MONDAY SERIES:
AN EASY WAY OF EXPLAINING WHAT COULD BE A COMPLICATED ISSUE
When discussing air quality, the term PM 2.5 comes up frequently. While it might sound like a complicated science term, “PM” really just stands for “particulate matter,” and “2.5” refers to the size of the particulate. Specifically, it is a particle with a diameter of 2.5 microns. PM 2.5 is a particularly pernicious particle, because humans can inhale these pollutants, exacerbating respiratory health conditions and making it harder for everyone to breathe. When the air has excessive amounts of harmful particles, the air quality is designated unhealthy, and it is safest for all groups to stay inside and limit exposure. There are multiple reasons that PM 2.5 can end up in the air. Ash from volcanic eruptions, wildfires, and vehicle exhaust can lead to high levels of pollutants in the air. While it is impossible to prevent all PM 2.5 pollution, switching to clean energy and improving public transport can limit the amount of anthropogenic emissions.
