Children need to learn each letter and the corresponding sound to pronounce and write ... even use small objects. The idea is ...

It's always fun to find signs and images in the natural world, from faces in wood whorls to accidental optical illusions. So ...

Scratched on the wall of a mine is the very first attempt at something we use every day: the alphabet ... including a small, red sandstone sphinx with the same handful of letters on its side ...