Indoor pollution can also kill people
Indoor air pollution causes 4 million 300 thousand people to die each year, and 3 million 700 thousand people die each year from outdoor air pollution. This is a report released by WHO in May this year. When we discuss the Environment, we should also pay attention to the indoor air pollution. After all, most of the time we stay indoors,usually, we think that the "closed the doors and windows", "the use of the air purifier", you can easily reduce indoor air...