I have a fun and creative way to help your preschool, kindergarten or homeschool student learn their ABCs! These 26 free ...

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 ...

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 ...