New Hampshire’s proposed testing proposal is notably stricter and more supervised than in other states, including: Each vehicle must be followed by an escort.

There’s something about the term “waste heat” that just cries out for a clever engineering fix. Heat can do work, so if an industrial process or power production creates too much of the stuff, why can’t we make use of it?

For some reason, China doesn’t want to take all our junk any more, which means it costs more to get rid of. How unfair!

Not an airship (rigid interior, like the Hindenburg) – a blimp.

The New Hampshire House has approved a plan to charge a sliding fee to vehicles based on their efficiency, starting with those that get as little as 21 mpg, to compensate for paying less gasoline tax. The bill passed Thursday, 168-152, on a roll call vote. It would...