I’m not in Philadelphia this weekend – got out of town! For those in the area and enjoying the city, here’s some links on how to take part in the biggest Independence Day celebration in America.

You read that right. Philadelphia has the biggest Independence Day celebration. It is the birthplace and we’ve…

Image of Ford Reflex, a concept hybrid vehicle with solar panels on the roof

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Philip Greenspun, professor of electrical engineering at MIT (and an avid traveler and fellow aviator), has an outstanding post. He explains some simple math behind replacing every passenger vehicle in America for more→