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Earth Talk: Is it greener to take showers or baths?

Can you settle this age-old question for me once and for all: Is it greener to take showers or baths? And how can I save water either way? 

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More carbon emissions: Ebikes or conventional bikes?

E-bike pioneer Justin Lemire-Elmore argues that e-bikes are better for the environment, at least if you compare the carbon emissions associated with producing enough extra food to fuel the rider of a standard bicycle against the emissions from coal-derived electricity used to...