Can you make a screw out of a piece of paper and pencil? Your friends might think it is magic, but it’s science at work. Here’s an easy experiment that might add a “twist” to your thinking. MATERIALS ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Screwdrivers are among the simplest hand tools and everybody knows how to use one.

When a screw sticks out on metal or isn’t perfectly flush with the surface, an angel in heaven loses an eyeball. Or something like that. But fret not eyeballs of angels in heaven, people of Earth can ...