When Maureen Long talks to the public about her work, she likes to ask her audience to close their eyes and think of a landscape with incredible geology. She hears a lot of the same suggestions: ...

President Trump ordered steep new tariffs on imports from around the world. Economists say they could lead to higher prices and slower growth, as well as huge changes in the global economic order.

Ted Widmer, a consulting editor for this special issue of Globe Ideas, is the author of “Lincoln on the Verge: Thirteen Days ...