The most important news story of 1903 received modest coverage, and it wasn’t very accurate. Two brothers from Dayton, Ohio, conducted four machine-powered, heavier-than-air flights under human control on a single day in December. The Virginian-Pilot newspaper in Norfolk, not far from the Kitty Hawk, N.C., testing ground, ran an exaggerated account of the Wright Brothers’ triumph — but in Dayton, a hometown paper, refused to mention it. “Man will never fly,” a local editor harrumphed (perhaps apocryphally). “And if he does, he won’t be from Dayton.” Another possible milestone of technology passed quietly not long ago. It might be the beginning of the end for fossil fuels and the key to reaching the goal of a green power grid. If so, it will certainly be among the most important stories of the year — bigger than space tourism, bigger than the Arizona election audit, bigger than the discovery that the amazing Simone Biles is human, not a god.

One caveat: Very few engineering breakthroughs change the world. Most end up being less than meets the eye. That said, let’s have a look.

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