Most home cooks buy sharpening stones in the wrong order, then wonder why their knives still feel dull after a careful session at the sink. If you understand how grit actually shapes and refines steel ...

Untrained, captive orangutans can complete two major steps in the sequence of stone tool use: striking rocks together and cutting using a sharp stone, according to a study by Alba Motes-Rodrigo at the ...

Stephen has degrees in science (Physics major) and arts (English Literature and the History and Philosophy of Science), as well as a Graduate Diploma in Science Communication. Stephen has degrees in ...

Macaques use stones as hammers to smash open food items like shellfish and nuts. (Lydia V. Luncz) When monkeys in Thailand use stones as hammers and anvils to help them crack open nuts, they often ...

Let's cut to the chase.

—it’s a dull knife. Once that blade is dull, it forces a person to misuse a knife, resulting in problems. Traps don’t get carved right. Meat doesn’t come off the bone of your deer right. And, in ...