Could A Giant Vacuum Cleaner Tackle Pollution?

FastCoExist highlights a device that sucks fine particulate matter from the air, that if deployed in sufficient numbers would clean the air in cities and other polluted areas.

The Dutch inventors claim the huge ‘vacuum cleaners’ can filter most of the fine particles emitted from vehicles / power plants and through industrial pollution – that have both health and climate impacts.
Source: https://www.fastcoexist.com/3065052/change-generation/this-giant-dutch-vacuum-cleaner-sucks-pollution-out-of-the-sky

Audi’s active suspension draws power from bumps in the road


Audi has developed an active suspension system – eROT – that captures kinetic energy from bumps in the road and potholes and converts it into electricity. From Engadget’s article:

To convert kinetic to electrical energy, the shocks use a lever arm that captures up-and-down wheel motion and transmits it to a 48 volt alternator. It’s then converted into electricity, with an average recuperation output of 100 to 150 watts — as little as 3 watts on a freeway, and up to 613 watts on a rough county road.

Via Engadget: https://www.engadget.com/2016/08/11/audi-regenerative-active-suspension/