摘要
A tower which vacuums up smog en masse has arrived in Beijing.The 7-meter-high tower,designed by Dutch artist Daan Roosegaarde,is said to be the largest air filter in the world,capable of purifying 30,000 cubic meters of air within one hour.But its function isn’t limited to creating clean air—the smog particles it captures can also be made into black sapphire,according to its designer.
A tower which vacuums up smog en masse has arrived in Beijing.The 7-meter-high tower,designed by Dutch artist Daan Roosegaarde,is said to be the largest air filter in the world,capable of purifying 30,000 cubic meters of air within one hour.But its function isn’t limited to creating clean air—the smog particles it captures can also be made into black sapphire,according to its designer.The arrival of the tower coincided
