There are some inventions that look completely pointless to the untrained eye: who would ever need a motorized garbage can, an electric pencil sharpener or a battery-powered eraser? Quite often ...

The pencil “lead” is actually a mixture of graphite and clay. More clay in the mixture makes the lead harder. A harder lead has a higher number. Pencils are numbered from 1-3 but most people use a ...

This polymer sponge works like a pencil eraser. The active ingredient is melamine (a nitrogen-rich organic base) that acts as a mild abrasive, lifting the staining material. As it does ...

Cowherd described how last year he took UConn and the Huskies did win it all, their second straight national championship ...

Pencils, erasers, ballpoint pens - it was always fun to start a new term with a new brace of equipment in your pencil case. And have you ever thought about the history behind those school essentials?

This tiny snail is not much bigger than a pencil eraser. Its body—most of it a muscular foot—is bumpy and brown, and its antenna-like eyes are almost translucent. A gland in the snail’s foot ...