There’s something almost magical about the rhythmic clickety-clack of train wheels on tracks that makes time slow down and worries melt away, and the River Fox Train in West Sacramento delivers this ...

Is the circle obsolete? We explore the concept, physics, and engineering challenges of triangular wheels (Reuleaux triangles) ...

Researchers uncovered a 2.75–2.44 million-year-old site in Kenya showing that early humans maintained stone tool traditions for nearly 300,000 years despite extreme climate swings. The tools, ...

Imagine early humans meticulously crafting stone tools for nearly 300,000 years, all while contending with recurring ...