A team of engineers at MIT led by C. Cem Tasan has discovered why steel razor blades go dull even when cutting hair that's 50 times softer than them. Using an electron microscopic, they found that ...

FOR A LONG time, I saw straight razors more as weapons than as grooming tools. Maybe it was Sweeney Todd, maybe it was the ...

IT TOOK a leisurely 70 years after King Gillette invented the safety razor for someone to come up with the idea that twin blades might be—or, at least sell—better. Since then, the pace of change has ...

Razors may start sharp, but even though they only cut soft hair, they become dull surprisingly quickly. Now we know why blades that cut soft materials lose their edges so easily, which should help ...

When their razor-sharp mandibles wear out, leaf-cutter ants change jobs, remaining productive while letting their more efficient sisters take over cutting, say researchers. Their study provides a ...