German battleship Tirpitz

German battleship Tirpitz.
Tirpitz was the second of two Bismarck-class battleships built for Nazi Germany during World War II. The ship was laid down in November 1936 and commissioned in February 1941. Tirpitz was armed with a main battery of eight 38-centimetre (15 in) guns in four twin turrets. She was the heaviest battleship ever built by a European navy. In early 1942, the ship sailed to Norway to act as a fleet in being, forcing the British navy to retain significant forces in the area. In September 1943, Tirpitz, along with the battleship Scharnhorst, bombarded Allied positions on Spitzbergen, the only time the ship's main battery was used offensively. On 12 November 1944, British Lancaster bombers equipped with 12,000-pound (5,400 kg) "Tallboys" bombed the ship, causing her to capsize. A deck fire spread to an ammunition magazine causing a large explosion. Between 1948 and 1957, the wreck was broken up in a salvage operation. (This article is part of a featured topic: Battleships of Germany.)

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1958 US–UK Mutual Defence Agreement

1958 US–UK Mutual Defence Agreement.
The 1958 US–UK Mutual Defence Agreement is a bilateral treaty between the United States and the United Kingdom on nuclear weapons co-operation. It allows the two countries to exchange nuclear materials, technology and information, and was signed on 3 July 1958, after the British hydrogen bomb programme successfully tested a thermonuclear device. While the US has nuclear co-operation agreements with other countries, including France and other NATO countries, this agreement is by far the most comprehensive. Exemplifying the Anglo-American Special Relationship, it allowed American nuclear weapons to be supplied under Project E. The treaty has proved mutually beneficial, and paved the way for the Polaris Sales Agreement and the Trident nuclear programme submarines, including HMS Victorious (pictured), all of which use American missiles with British nuclear warheads. The most recent renewal of the treaty extended it to 31 December 2024.

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Secretariat (horse)

Secretariat (horse).
Secretariat (March 30, 1970 – October 4, 1989) was an American Thoroughbred racehorse who, in 1973, became the first Triple Crown winner in 25 years. Secretariat set speed records in all three Triple Crown races. His time of 1:59​2⁄5 in the Kentucky Derby still stands as the Churchill Downs track record for ​1 1⁄4 miles. His disputed time in the Preakness Stakes was recognized as a stakes record in 2012. He won the Belmont Stakes by 31 lengths, setting an American record for ​1 1⁄2 miles on dirt that still stands. He also set a world record in the Marlboro Cup, and proved his versatility by winning two major stakes races on turf. His 1972–1973 racing career resulted in five Eclipse Awards, including American Horse of the Year honors both years. Of The Blood-Horse's Top 100 U.S. Racehorses of the 20th Century, Secretariat ranks second only to Man o' War. After siring several major stakes winners, Secretariat died at age 19 of complications from laminitis.

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Francis Willughby

Francis Willughby.
Francis Willughby (1635–1672) was an English ornithologist and ichthyologist, and an early student of linguistics and games. At Trinity College, Cambridge, he was tutored by the mathematician and naturalist John Ray, who became a lifetime friend and colleague. Willughby, Ray, and others including John Wilkins were advocates of a new way of studying science, relying on observation and classification, rather than the received authority of Aristotle and the Bible. Willughby and Ray undertook journeys to gather information and specimens in England, Wales, and continental Europe, visiting museums, libraries and private collections as well as studying local animals and plants. After Willughby's early death, Ray completed the works they had jointly planned, publishing books on birds, fish and invertebrates that included innovative ways of classifying animals. Carl Linnaeus relied on Willughby and Ray's books in his Systema Naturae, the basis of binomial nomenclature.