You are given a passage. Using the information present in the passage, you need to classify it into one of the 10 topics: 0 - 'Society & Culture', 1 - 'Science & Mathematics', 2 - 'Health', 3 - 'Education & Reference', 4 - 'Computers & Internet', 5 - 'Sports', 6 - 'Business & Finance', 7 - 'Entertainment & Music', 8 - 'Family & Relationships', 9 - 'Politics & Government'.

Right.  Fuel additives are helpful for reduction of emissions, although they are not always economical.  For the most part, the US congress has subsidized the creation of ethanol, which tends to be a net cost unless created from waste agricultural products.\nAnother substance that has the same anti-emissions properties as ethanol is MTBE.  There has been a lot of press about MTBE recently due to its tendency to pollute groundwater.
1