The coolest letter in the alphabet: When we learn the letters of the English alphabet, we just remember them in order, from A to Z. But have you ever thought about whether some letters are just ...

Handwriting is so unique to an individual, it can be used in court to identify suspects and victims. But what would happen if you took all the different ways people around the world write the Latin ...

For the first time, scientists have expanded life's genetic alphabet, by inserting two unnatural, man-made "letters" into a bacterium's DNA, and by showing that the cell's machinery can copy them. The ...