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Mayer Amschel Rothschild (1744-1855), founder of the house of Rothschild; lithograph by Friedrich Lieder, c. 1830.

Where Do Anti-Semitic Conspiracy Theories About the Rothschild Family Come From?

Super Typhoon Noru over the western tropical Pacific Ocean as observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA Aqua satellite July 31 2017

What Is the Difference Between a Typhoon and a Super Typhoon?

Thumbnail for flags that look alike quiz Russia, Slovenia, Iceland, Norway

Flags That Look Alike

Thanksgiving Celebration Traditional Dinner Setting Food Concept

Why Is Thanksgiving in the U.S. Celebrated on a Thursday?

Thanksgiving Turkey with all the sides

Why Do We Eat Turkey on Thanksgiving?

A human Inuit skull in a stone chambered cairn in Ilulissat in Greenland. These ancient graves are pre christian and are at least 2000

14 Tough Questions Answered

Diverse elementary school children wearing school uniforms running outside of school. Boys girls

Pro and Con: School Uniforms

etch

material

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use in lithography

In printmaking: Lithography
…it is fixed with an etch to prevent the spreading of the grease. A heavy, syrupy mixture of gum arabic and a small quantity of nitric acid, the etch is used to protect the drawing from water and to further desensitize the undrawn areas to printing ink. The nitric acid…
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