Air pollution comes from both natural and human-made sources. Natural sources include volcanoes, wildfires, and animals, but these contribute very little compared to human sources like fuel combustion from vehicles, power plants, and industrial facilities. Exposure to air pollution can negatively impact human health, especially for those with respiratory or heart conditions, and may cause conditions like heart disease or cancer with long-term exposure. Air pollution also damages plants and ecosystems. Various pollutants are transported by wind and weather, affecting wide areas locally and globally. Reducing energy usage through efficient technology can help lower emissions by reducing the need for power plant operations.