Have you ever watched a mile-long freight train rumble by and wondered how one locomotive can pull more than a hundred fully loaded cars? The locomotive weighs maybe 150 metric tons, and each car is ...

Inside a diesel engine's cylinder, compressed air raises the temperature to ignite injected fuel, and the resulting force drives pistons to power the vehicle's main gears. Chief to this combustion ...

Gasoline engines usually run on the Otto cycle, the standard four-stroke and two-stroke combustion process that has been powering humanity for a while now. Although engines typically rely on the "suck ...

Shares of Caterpillar, the maker of mining and construction machinery, are up more than 30% since year-end, making it the biggest contributor to the Dow Jones Industrial Average. WSJ’s Jonathan Weil ...

Unity CEO Matthew Bromberg has touted generative AI advancements in its game engine that'll soon enable users to "prompt full casual games into existence" just by using natural language. While ...

This is an edition of The Future of Everything newsletter, a look at how innovation and technology are transforming the way we live, work and play. If you’re not subscribed, sign up here. In the ...

You want to get around that wide load pretty badly, and also the slowish car that's leading the way. But don't cut them off. The results can be catastrophic.

Removing an 800-HP rotary engine is supposed to feel like progress, not panic. The moment it came out, a hidden problem became obvious. There’s something peculiar about how rotary builds can hide ...

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