26The Law of Nations

In 1789, George Washington borrowed a book named The Law of Nations by Emer de Vattel from the New York Society Library and never returned it. In 2010, Mount Vernon staff returned the book 221 years late, by which time the overdue fine had reached $300,000, adjusted for inflation. The fine was waived.
27. "Zombies" first appeared on movie screens in a 1919 French film called J’accuse. Director Abel Gance used soldiers on leave from fighting in Verdun to portray “an army of the dead.”
28. Anton’s syndrome is a mental disorder in which people suffering from it believe they can see when in fact they are cortically blind. They can’t be convinced otherwise though and will be very offended if you point their blindness out. They will start confabulating/making things up when asked what exactly they are seeing.
29. Bones produce piezoelectricity when stress is applied and forms electrical dipoles that attract osteoblasts. Osteoblasts deposit calcium and other minerals on the part of the bone that is stressed which increases the density of the bone.
30. Although pandas have switched to a bamboo only diet for 2.4 million years, they have experienced little to no changes in their digestive system and are completely able to eat and digest meat.
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31Pikachurin

In 2008, Japanese researchers discovered a protein that helps carry electrical impulses from the eye to the brain. They named it Pikachurin in reference to the electric-type Pokémon named Pikachu.