This story was originally produced by the New Hampshire Bulletin, an independent local newsroom that allows NHPR and other outlets to republish its reporting. It was a Monday in February with a low of ...

Preparation for an EPA stack test is crucial in the process of passing that test. While most of this seems common sense, it’s easy to overlook something and discover too late that you’re on the road ...

How does the US Environmental Protection Agency decide how far an electric vehicle can go on a single charge? The simple explanation is that an EV is driven until the battery runs flat, providing the ...

A drive cycle is a standardized test procedure to measure a vehicle's emissions and fuel economy. The test is designed to mimic typical driving patterns, such as city and highway driving, and to ...