For more than two centuries, the measurement of horsepower has been traced back to James Watt’s claims about draft horses, yet few questioned whether those numbers were accurate. In this experiment, ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Bryan Healy speaks of the 1923 Minneapolis steam engine as if it was a member of his own family, and in many ways it is. The ...

A set of steam engines which have stood idle for 26 years are now ready to be back in action.

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

With a new academic year on the horizon, and educators and librarians on the lookout for fresh classroom and library materials, we asked publishers to share their insights into the STEM/STEAM category ...