November 1 in history — On This Day
1963
Arecibo Observatory Opens Its Giant Dish in a Puerto Rican Sinkhole
On November 1, 1963, the Arecibo Ionospheric Observatory was dedicated in Puerto Rico. Its 305-meter dish, built into a natural sinkhole, was the largest single-dish radio telescope in the world for more than half a century.
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Chicago After the Fire: From Burned Blocks to a New Skyline
A photograph taken after the 1871 fire can make Chicago look as though its future had been decided by a wall of flame. A view from around 1905 tells a different story: tall offices, busy transport routes and commercial streets crowded again.
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