Humans & Society

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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. 

illustration of Neandertals

MURKY RELATIONS  Once thought of as cavemen, Neandertals may have built structures, researchers discovered 50 years ago. The finding led to speculation that Neandertals were direct ancestors of modern humans, a conclusion that is still hotly debated.

gmo salmon

Regular salmon may soon be joined in grocery cases by genetically engineered fish (shown). The FDA has approved genetically modified salmon for human consumption.

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