The Ellen MacArthur Foundation aims to make circular design "the new normal' by persuading 20 million designers to help transform the global economy from a linear to a circular model. The non-profit ...

As cities grow, so do urban water challenges. It is estimated that the urban population worldwide will nearly double by 2050 ⁠— an increase that has serious implications for water demand in cities.

A rack and pinion steering system consists of a pinion (a circular gear) with a rack (a linear gear). The system works by converting a revolving motion into linear motion. Most cars, small trucks, and ...