Crystal Rollins and her co-workers fanned out and searched every inch of their easy-to-get-lost-in 24,000-square-foot Londonderry shop, but Bert and Ernie were nowhere to be found. Sometime on the ...

It's not as if Big Bird and his Sesame Street pals Bert and Ernie haven't been threatened with eviction before. Every decade or so—going back to the 1970s, when Big Bird was newly hatched—a handful of ...