What happens to the natural gases collected from a sanitary landfill?

The natural gas collected from sanitary landfills is used to produce electricity, heat, fuel, and other chemical compounds.  More gas can be collected from closed sanitary landfills than open sanitary landfills.  A closed sanitary landfill is no longer accepting waste.  An open sanitary landfill is accepting waste. 

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.