A study from Yale University has discovered that exposure to ultrafine particles of pollution may be a trigger for heart attacks. The study confirmed that 6 hours after exposure to this type of pollution, there was an increase of 3–6% in nonfatal heart attacks. There is a distinct connection between air pollution and various health situations, with children particularly receptive to harm. This signifies a significant step toward understanding the appropriate indicator of ultrafine particle exposure in determining short-term health consequences.To take the research further, future analyses would look at the combined hourly exposure to both air pollution and severe temperature.