science

Mosquito Nets As Tall As The Washington Monument

A Washington doctor with an interesting name was among the first to suggest a link between mosquitos and malaria.  Meet Albert Freeman Africanus King. Dr. A.F.A. King was a professor of obstetrics at Columbian University, precursor...

Weather Bureau Kiosk on Pennsylvania Avenue

This photo from 1912 shows a Weather Bureau kiosk at E Street and Pennsylvania Ave., NW.  It’s a high-resolution image, so feel free to click to see some extra details. Large cities around the country had...
Capitalsaurus Court street sign

Capitalsaurus: Official Dinosaur of the District (Seriously)

Workers were digging a sewer trench beneath a Capitol Hill street in 1898.  They came upon a few fossil fragments — among them, a 6-inch bone that now represents the largest piece of the District’s controversial...
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