Topical Currents begins with author Michael Largo, whose specialty is unusual topics. He’ll discuss THE BIG, BAD BOOK OF BEASTS: The Most Curious Creatures in the World. A Rhino can stand six-feet tall and weigh ten-thousand pounds. A sawfish has a six-foot saw blade snout. A sponge doesn’t mate, but clones. And a cobra can spit venom into the eye of a predator from six feet. And more. Linda Gassenheimer’s Food & Dining with wine columnist Fred Tasker. That’s Topical Currents Thursday at 1pm on WLRN-HD1 rebroadcast at 7pm on WLRN-HD2 and audio on-demand after the live program.