Source: Wikipedia
There is a limit to how loud a sound can be, and it is lower than most people assume.
Sound travels as alternating regions of higher and lower air…
Maya Linton
Source: Wikipedia
Ask anyone to picture an aircraft black box and they will picture something black. It is one of the most widely held misconceptions about aviation, and it is wrong…
Source: Wikipedia
Most people assume Pompeii has been fully uncovered. The photographs suggest a complete Roman town sitting in the open, streets and houses and shopfronts, waiting for visitors.
Roughly two-thirds…
Mortar is the least glamorous part of any building and frequently the part that determines whether it survives. Stone and brick last for millennia on their own; what usually fails…
Goosebumps are among the strangest things the human body does routinely. A sensation arrives — cold air, a piece of music, someone's fingertips on the back of your neck —…
Hiccups are so ordinary that almost nobody asks what they are for. Everyone gets them, they arrive unbidden, they are mildly annoying, and they go away.
But consider what is…