A man stands guard after members of the "3% of Idaho" group along with several other organizations arrived at the Malheur National Wildlife Refuge near Burns, Ore., on Saturday, Jan. 9, 2016. A small, armed group has been occupying the remote national wildlife refuge in Oregon for a week to protest federal land use policies. (AP Photo/Rick Bowmer)

Where the “Well Regulated Militia” Clause Came From

The ideological roots of the concept of militias in America stretch back into English history.
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The First “War on Christmas”

The controversy over Jesus’s birthday has gone on for centuries.
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Blood transfusion - 17th century (?)
"Anthropographia" (?) showing blood transfusion between man and sheep; ascribed to J. G. Riva (fl 1618) author of 'De triplici infusionis sanguinis experimento'
Iconographic Collections

First Blood Transfusion: A History

The world’s first experiments with blood transfusion occurred in the mid-1660s in England. The procedure, carried out between dogs, was gruesome.