Establishing the science of stone walls

New England's landscape is known for many things, such as the brilliant diversity of colorful foliage on display each autumn. It is at this time of the year when another iconic landscape feature re-emerges as the leaves fall—thousands ...

A 15th century French painting depicts an ancient stone tool

More than 500,000 years ago, our human ancestors used large, stone tools known as "Acheulean handaxes," to cut meat and wood, and dig for tubers. Often made from flint, these prehistoric oval and pear-shaped tools are flaked ...

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