Charcoal biofilter cleans up fertilizer waste gases

Removing the toxic and odorous emissions of ammonia from the industrial production of fertilizer is a costly and energy-intensive process. Now, researchers in Bangladesh have turned to microbes and inexpensive wood charcoal ...

Houseplants cut indoor ozone

Ozone, the main component of air pollution, or smog, is a highly reactive, colorless gas formed when oxygen reacts with other chemicals. Although ozone pollution is most often associated with outdoor air, the gas also infiltrates ...

First Australians did not boost fire activity

(PhysOrg.com) -- The arrival of the first people in Australia about 50,000 years ago did not result in significantly greater fire activity, according to a landmark new research report on the continent's fire history going ...

Cameroon start-up offers clean streets, cleaner fuel

The streets and marketplaces of Cameroon's economic capital Douala are strewn with fruit and vegetable debris of all sorts: banana peels, corncobs, coffee grounds, mashed sugarcane... you name it.

page 3 from 7