Pollution

It's only one guy and a pretty small machine. Imagine what would come of a dozen, or a hundred of these things.

but he didnt, he got a pile of dust and added it to a pile of clay to make a symbolic brick. he made a brick from pollution the same way you make a cake from eggs.

Good point, deviledapple. Come to think of it... a lot of that smog is due to non-solids that the vacuum cleaner wouldn't have retained anyway unless you used a chemical adsorbent. At which point we're back to "making a cake from eggs".

i mean, hed be able to pick up some ash from fire related smog, the rest is just air particles probably unrelated to the smog..

problem is, the added need for electricity will create more pollution from generating it

you could use mostly renewable energy sources, and use just enough natural gas to cause the levels of pollution to go down slowly

Still omits carbon dioxide

that's heavy

*heavy breathing*