PRIVATE CARS WERE RELATIVELY SCARCE in 1919 and horse-drawn conveyances were still common. In residential districts, electric streetlights had not yet

Our post-World War II pattern of development operates like a classic Ponzi scheme, with ever-increasing rates of growth necessary to sustain long-term liabilities.

The Navy has patented technology to create mid-air images to fool infrared and other sensors, offering a game-changing method of protecting aircraft from heat-seeking missiles. It may also provide a clue about the source of some recent UFO sightings by military…

The map gives a new view of invisible matter in our cosmic neighborhood.

A new study has made a surprising discovery: numerous gut bacteria of many kinds are able to generate electricity. This may open up novel research avenues.