By TAMARA LUSH, Associated Press NEW PORT RICHEY, Florida (AP) — It's a rite of passage in schools across the U.S.: frog dissection. Sometimes it happens in middle school, sometimes in high school. Feelings about the lesson are generally summed up in one word: gross. The frogs are slimy and greenish-grey, and they stink because they're pickled in formaldehyde. One Florida high school recently tried