One way to tell Boeing 737 family aircraft from their Airbus A320 family counterparts is that 737s have a distinctive flat-bottomed engine. But why? The Boeing 737 was designed at a time when ...

Why do some boats have flat bottoms and others have V-shaped undersides of various angles and contours? Let us introduce the concept of deadrise, how it is intrinsic to V-bottom boats, how it affects ...

We tested flat-bottom- and cone-shaped versions as well as two larger all-in-one carafe-style designs, ranging in price from about $14 to $80. While many looked quite similar, they varied in ...

The Dutch fleet of some 400 traditional flat bottomed sailing boats, is foundering and must be included in the Unesco world heritage list to ensure its survival, worried provincial authorities have ...

The flat-bottomed paper bag is a marvel of quiet utility. It stands tall at the checkout counter of grocery stores ready to cradle the essentials of daily life — from fresh produce to a warm ...