The human body produces up to a third of a gallon of mucus a day. When you're healthy the mucus is directed down your throat by cilia hairs; when you're sick the mucus may be thicker or the passage may be inflamed, causing it leave through your nose as snot.
Until the 20th century the currency of the Yap Islands were Rai Stones. These stone wheels weighed more than 2000 pounds and as a result were traded via word of mouth into oral history; a stone sunk to the bottom of the ocean while being transported back to Yap, it was still used as currency.
Facial recognition of their own species is practically unheard of in insects. However, Paper Wasps have developed this ability and it's hypothesized that it's due to the 4-5 queens each colony has.
Our perceived view of the world is about 80ms behind physical events due to the speed at which the brain processes information. For context, 80ms is roughly the same time it takes us to blink.
Thomas Jefferson believed the US constitution and laws should expire and be rewritten every 19 years. This prevents entrapping younger generations from the decisions of generations past that may no longer be relevant; otherwise allowing the dead to rule the living.