Carbon footprints are a familiar way to assess how green your lifestyle is, but now you can also measure your nitrogen footprint using a new tool, the N-Calculator.

Space & Earth - Environment

May 15, 2013 5 / 5 (1) 0

(PhysOrg.com) -- Scientists have found that acidic ozone water can deactivate H1N1 viruses very effectively, offering a promising disinfectant for the millions of people trying to avoid the disease. Acidic ...

Chemistry - Biochemistry

Nov 09, 2009 4.5 / 5 (44) 16