Air cleaner

(cont'd from yesterday's post)

Dutch artist Dan Roosegaard will be testing his air-cleaning-tower in Beijing in September. The towers create a pool of cleaner air as the they take out about 75% of the pollution.

The amount of energy used by the towers is another aspect of their usefulness. They run on just 1400 watts of power - no more than a tea kettle.

Btw, that ring in yesterday's post was actually a "cube that resembles a diamond," made by compressing the captured smog for half an hour.