A sharp knife is safer, faster, and far more satisfying to use—but only if you maintain it properly. After testing electric and manual knife sharpeners on everything from chef’s knives to pocket ...
Live Science on MSN
480,000-year-old ax sharpener is the oldest known elephant bone tool ever discovered in Europe
The "very rare" find provides an extraordinary glimpse into the ingenuity of early human relatives who lived around half a ...
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