pollution particles

In the US, this device is sold quite widely for $ 13 per 10. It is advertised to block up to 90% of contaminated particles, allergens, bacteria and 70% of finer particles.

Recently, NASA's Aqua satellite has returned to Earth, bringing with it unique images of green planets taken from outer space.

Beijing on December 7 has for the first time raised the level of warning about air pollution to the highest level, after the smoke carried an unpleasant smell back to the city.

Researchers have recently discovered tiny pollutant molecules inside brain tissue samples, suggesting that dust pollution not only attacks the lungs but also the nervous system.