Humans & Society

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stone tool from Monte Verde

AMERICAN MADE  A 16,000- to 15,000-year-old stone artifact unearthed at Chile’s Monte Verde site, shown from both sides, contains smooth areas where pieces of the rock were struck off to create a scraping or cutting tool. Researchers say humans first visited the site at least 18,500 years ago.

Fossil Finder screenshot

INTERNET SEARCH  To better understand the past environment of Kenya’s Lake Turkana Basin, asks volunteers to scrutinize thousands of aerial photos taken at the site.

Thomas Jaggar at Kilauea

PIONEERING SCIENTIST  The new book The Last Volcano chronicles the life of volcanologist Thomas Jaggar. Jaggar, second from left, is shown here measuring lava at Hawaii’s Kilauea volcano in 1917. 

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