Among the earnings stories for Thursday, Oct. 22, from AP Financial News: SIOUX CITY, Iowa (AP) ¿ Fertilizer maker Terra Nitrogen Co. LP said its third-quarter profit plunged 84 percent as sales dropped and selling prices fell by about a third. DENVER (AP) ¿ Chipotle Mexican Grill Inc. said its third-quarter profit climbed almost 77 percent, thanks in part to the addition of new restaurants. NASHVILLE, Tenn. (AP) ¿ Wellness-program provider Healthways Inc. said its third-quarter profit plunged on lower program revenue and higher costs, though the company boosted its full-year outlook. MINNEAPOLIS (AP) ¿ Mattress maker Select Comfort Corp. reported a surge in third-quarter earnings and said it will post a profit for the full year as business begins to stabilize, sending shares up more than 6 percent in aftermarket trading. SANTA CLARA, Calif. (AP) ¿ Dental products company Align Technology Inc. said that hefty costs for a patent lawsuit settlement caused a third-quarter loss, but adjusted profit topped Wall Street expectations.