Knives are humanity’s oldest tool, dating back millions of years. A group of scientists in Maryland have produced a version made of hardened wood, which they say is sharper than steel.
A Wooden Knife Sharper Than Steel? Scientists Say So.
Knives are humanity’s oldest tool, dating back millions of years. A group of scientists in Maryland have produced a version made of hardened wood, which they say is sharper than steel.
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