Featured by Bob Sillery (Editor); Research Brad Dunn, Gunjan Sinha, and Dawn Stover
FYI: What Are Winglets?
I have seen everything from private jets to 747s and A300s with small upright tails on their wing tips. What purpose do they serve?
How are underwater tunnels built?
In 1818, a French engineer invented a device that enabled workers to tunnel under rivers without having mud and water ruin their efforts.
FYI: Black Boxes Aren’t Black
Why are flight data recorders referred to as "black boxes," even though the boxes are not actually black?
What do people who have been blind since birth see in their dreams?
Someone who was born blind experiences sounds, smells, and sensations while dreaming, but are their dreams visual?