Wild Insides
#5How things work
Why Shopping Carts Lock Up At The Parking Lot Edge
Some shopping carts have a hidden brake in one wheel.
Short. Strange. True.The real science
airplane window · airplane window hole · why do plane windows have holes · breather hole · cabin pressure · how planes work
The real science
That tiny hole in your plane window is there on purpose. Your window is really three panes, and the hole in the middle one makes the outer pane carry all the cabin pressure. That keeps the middle pane fresh as a backup, and the same hole helps stop fog and frost.
Don’t try anything shown in this video.
Follow the facts
Ask about this science
Curious about something in “Why Airplane Windows Have A Tiny Hole”? Our AI-powered helper answers using only this page’s write-up and sources.
AI answers can be wrong; check the sources. Not medical advice.
Our illustrations simplify anatomy and scale. Educational content only; not medical advice.
Still curious?
#5
#3How things work
Why A Snapped Elevator Cable Won't Drop You
Almost everyone has wondered what happens if an elevator's cable snaps.
Short. Strange. True.The real science
#2How things work
How Pill Bottle Caps Outsmart Most Toddlers
Child-resistant medicine caps hide a two-part lock that only opens when you push down and turn at the same time.
Short. Strange. True.The real science