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 ...

The original version of this story appeared in Quanta Magazine. If you want to solve a tricky problem, it often helps to get organized. You might, for example, break the problem into pieces and tackle ...

A study of 4 million job applications screened by a hiring algorithm found evidence of "clear racial disparities" in applicant outcomes, with 26% of applications submitted by Black applicants and 15% ...