Soviet engineers envisioned a revolutionary high-speed monorail built from concrete that could reach speeds of 300 km/h. Equipped with gyroscopic wheels and powered by overhead electric wires, it ...

Gravity Technologies is preparing to plant “trees” to juice up city agency vehicles, with help from the lobbying firm founded by the mayor’s former chief of staff, Frank Carone.

The Sun Provides Enough Energy in One Hour to Power the World for a Year Imagine the sun as an enormous, blazing powerhouse ...

Jeep provided a night in a hotel so Ars could attend the Wagoneer S first drive. Ars does not accept paid editorial content.

China’s "artificial sun" EAST fusion reactor smashed the previous record for sustained plasma, advancing nuclear fusion ...