Mathematician Eugenia Cheng wants us to rethink our relationship to math -- and equality. We hear how different paths lead to identical outcomes in math, and how that can help us all in real life.

Words matter. And when it comes to learning math, they matter more than you might think.

Determining the least expensive path for a new subway line underneath a metropolis like New York City is a colossal planning challenge—involving thousands of potential routes through hundreds of city ...