Some years ago, during a rockfish chumming trip with St. Mary’s County charter fishing captain Eddie Davis, the skipper reminded me that I probably would not catch a lot of fish because of the ...

Each metro line usually has its own color on the map. For obvious reasons, these colors should be maximally different. Suppose a new metro line is built. We now explain a strategy to choose the color ...

People check out the newly opened Second Avenue Subway 86th Street station in New York on Jan. 1 in New York City. (AP Photo/Craig Ruttle) This is your first of three free stories this month. Become a ...

With eight more transit lines set to be operational in less than 10 years, the Los Angeles County Metropolitan Transportation Authority, faced with using subtle color shades such as olive, pink and ...