Wonderopolis.org publishes daily articles supposedly written for kids. “They’re just plain interesting,” though. Who wouldn’t be happy to learn, for instance, that pencil erasers commonly contain vegetable oil?
Quora.com is a terrific resource when you’re seeking an answer that requires opinion rather than just facts. Like Ask.com, it aggregates the wisdom of other Web users, “but the quality of conversation” at this start-up is “uncommonly high.”
Freerice.com helps feed the world with the power of trivia. Every time you answer one of the site’s multiple-choice question correctly, Freerice’s sponsors donate 10 grains of rice to the U.N. World Food Program. Multiplied by everyone who plays, “that’s enough to make a major difference for tens of thousands of hungry people.”