Stories
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Native Americans through the 19th-century lens
The stories behind Rinehart's photographs may not be as black and white as they first appear.
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Getting the measure of pain
In the 20th century doctors tried to find a way to measure pain. But even when ‘objective’ measures were rejected, an accurate understanding of another’s pain remained frustratingly elusive.
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A history of twins in science
For thousands of years, twins have been a source of fascination in mythology, religion and the arts. Since the 19th century, they have also been the subject of scientific study and experimentation.
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