ELT tackles some animal, vegetable, mineral mysteries with special guest Amy Sedaris. Plus, caller Maria is troubled by a hole in front of her condo — will she be swallowed by the earth? And the scoop on spinach tooth. Guests: Comedian and rabbit expert Amy Sedaris; Jim Correll, plant pathologist, University of Arkansas; geologist and sinkhole expert David Wilshaw. Thanks to callers Anthony, Eddie and Maria.