What they haven't known, however, is what that shape is ... until now. Per a paper published in Nature, the first 3-D model of the chromosome has been made using measurements taken of the X ...

One little letter, so much baggage. By Stella Bugbee The letter has its obvious appeals. X is a versatile shape — one of the few capital letters to remain symmetrical whether bisected vertically ...

Why, I found myself wondering, do we use the capital letter “X” to designate ... they’re good at covering the shapes of other letters.) This typewriter x was probably the inspiration for ...

Why Twitter users feel betrayed - The subtle ways language shapes us - The surprising history of the word 'dude' X-Files, X-Factor, X-Men, Generation X, X-rays, X-rated, Planet X… the letter is ...