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Pollution around the House ¡¡¡TScientists are closely concerned with the structure of buildings and with the quality of building materials. The World Health Organization (WHO) observes that the introduction of air conditioning and energy conservation measures have been accompanied by growing problems of indoor air quality. Some pollutants arise from insulation products, some from moving cars, and others from modern housing materials. As many Europeans spend up to 90% of their lives in buildings, the health effects of the indoor climate are very important. ¡«¡«¡«¡«¡«¡«¡«¡«¡«¡«¡«Î´Íê ¸ü¶àÄÚÈÝÇëµã»÷£º¡¡¡¡×îÐÂÖ°³ÆÓ¢Óﱸ¿¼-ÔĶÁÀí½âÄ£ÄâÌâÓë´ð°¸[45]