African wild dogs use a sneeze-based voting system — the more sneezes during a pack meeting, the higher the chance the group agrees to go hunting.

The Rolls-Royce Ghost's soundproofing was so overengineered that the silence made occupants feel disoriented and sick. Acoustic engineers had to "harmonize" sounds to create a soft, continuous whisper.

Hurricanes and cyclones are named after people because, in the late 19th century, meteorologist Clement Wragge started naming them after disliked politicians, saying they were "causing great distress" or "wandering aimlessly."

Recent studies have shown that people with sinus issues are four times more likely to have anxiety and twice as likely to have depression.

Tuesday, Wednesday, Thursday, and Friday are named after Norse gods: Tiw (Tyr), Woden (Odin), Thor, and Frigg (or Freyja). These day names reflect Roman influence, blending Germanic deities with the tradition of naming days after gods.

People started wearing pajamas, originally spelled “pyjamas,” instead of nightgowns so they’d be prepared to run outside in public during World War I air raids in England.

Studies show that chewing gum boosts cerebral blood flow and brain activity, improving reaction times, memory, alertness, productivity, and even math test scores compared to a control group.