Many people may be unaware of how asthma can be triggered on days with high levels of pollution. Part 7 of our series takes a closer look into this potential problem. [wpvideo ueAS888M]
Outdoor air pollution is caused by small particles and ground level ozone that comes from car exhaust, smoke, road dust and factory emissions. Outdoor air quality is also affected by pollen from plants, crops and weeds. Particle pollution can be high any time of year and are higher near busy roads and where people burn […]