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The sharpest object in the world can't cut anything

Scientists like to measure things, but they've had a heck of a time doing that with sharpness. And even if no one agrees on exactly how to measure it, our search for better tools has recently led to ...
insider.si.edu

A plain and easy account of the land and fresh-water mollusks of Great Britain : containing descriptions, figures, and a familiar account of the habits of each species / by ...

CC0 Usage Conditions ApplyClick for more information. This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the ...
insider.si.edu

Revolution of the eye : modern art and the birth of American television / Maurice Berger ; introduction by Lynn Spigel

Catalog of an exhibition held at the Jewish Museum, New York, May 1-September 20, 2015; Museum of Art / Fort Lauderdale, Nova Southeastern University, Florida, October 17, 2015-February 28, 2016; The ...
Mother Jones

It’s the Inequality, Stupid

Want more charts like these? See our charts on the secrets of the jobless recovery, the richest 1 percent of Americans, and how the superwealthy beat the IRS. How Rich Are the Superrich? A huge share ...