Pictured is a Still Bay bifacial point from Blombos Cave in South Africa made of silcrete and finished by pressure flaking, primarily at the tip. Image courtesy Science/AAAS A highly skillful and ...
A flaking and cracked concrete driveway in front of a rundown house. - Billy F Blume Jr/Shutterstock Seeing the surface of your concrete driveway start to chip or peel away is frustrating, especially ...
CAPE TOWN (Reuters) - A group of prehistoric people mastered a difficult and delicate process to sharpen stones into spears and knives at least 75,000 years ago, more than 50,000 years earlier than ...
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