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The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Car with a pickle design in the Zagreb Red Bull Soapbox Race, Zagreb, Croatia, September 14, 2019. (games, races, sports)

10 Unusual Sports

Portion of the Aleppo Codex, a manuscript of the Hebrew Bible written in the Hebrew language in the 10th century CE; in the Shrine of the Book, Israel Museum, Jerusalem.

Why Do Languages Die?

Close up of praying mantis walking on stone ground against a blurred background in Japan

6 Animals That Eat Their Mates

Normandy Invasion: Omaha Beach. World War II. D-Day. Infographic. SPOTLIGHT VERSION

Facts and Figures About the Landings on Omaha Beach During the Normandy Invasion on June 6, 1944

Rainbow flag. Sign of diversity, inclusiveness, hope, yearning. Gay pride flag popularized by San Francisco artist Gilbert Baker in 1978. Inspired by Judy Garland singing Over the Rainbow. gay rights, homosexual, gays, LGBT community

13 LGBTQ Writers You Should Read

Wasp spider. Argiope bruennichi. Orb-weaver spider. Spiders. Arachnid. Cobweb. Spider web. Spider's web. Spider silk. Black and yellow striped wasp spider spinning a web.

Do We Really Swallow Spiders in Our Sleep?

rod

glass

Learn about this topic in these articles:

production methods

In industrial glass: Tubes and rods
Tubes and rods are made in three processes: the Danner process, the downdraw process, and the Vello process. In the Danner process, a continuous stream of glass flows over a hollow, rotating mandrel that is mounted on an incline inside a surrounding muffle. With…
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