How can you have a proof without proving anything? Mathematicians found a way and, in the process, came to blows over it – ...

For more than a century, physicists debated which way a submerged sprinkler sucking in water would spin. Careful experiments ...

Math classrooms shifted over time to the discovery model. Not suddenly, and not without good intentions. There was a ...

Using this mode it can be easily (using 3 keystrokes … it’s Emacs) to PDF or HTML to make it more readable (and add a table of contents). Please don’t try to “beautify” it with any other text editor ...