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Lexington, a racehorse whose pedigree was suspect
Lexington, a racehorse whose pedigree was suspect

The Jersey Act was a 1913 regulation by the British Jockey Club and the owners of the General Stud Book that prevented most American-bred Thoroughbred horses from registering with them. It was intended to halt the increasing importation of racehorses of possibly impure bloodlines from America. The loss of breeding records during the American Civil War and the late beginning of the registration of American Thoroughbreds led many in the British racing establishment to doubt that American-bred horses were purebred. The Act prohibited the registration of horses unless all of their Thoroughbred ancestors had been registered. Despite protests from American breeders the regulation was in force until 1949. By then, ineligible horses were increasingly successful in races in Europe, British and Irish breeders had lost access to French Thoroughbreds during and after the Second World War, and any impure ancestors of the American bloodlines had receded far back in most horses' ancestry. (Full article...)

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In chemistry, an amino acid is a molecule containing both amine and carboxyl functional groups. In biochemistry, this term refers to alpha-amino acids with the general formula H2NCHRCOOH, where R is an organic substituent.[1] In the alpha amino acids, the amino and carboxylate groups are attached to the same carbon, which is called the α–carbon. The various alpha amino acids differ in which side chain (R group) is attached to their alpha carbon. They can vary in size from just a hydrogen atom in glycine through a methyl group in alanine to a large heterocyclic group in tryptophan.

Beyond the amino acids that are found in all forms of life, many non-natural amino acids have vital roles in technology and industry. For example, the chelating agents EDTA and nitrilotriacetic acid are alpha amino acids that are important in the chemical industry. (more...)

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Modern sculpture of Henry III's white bear
Modern sculpture of Henry III's white bear

September 8: Victory Day in Malta

Queen Elizabeth II in 1959
Queen Elizabeth II in 1959
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Ruby Bridges

Ruby Nell Bridges Hall (born September 8, 1954) is an American civil rights activist. She was the first African American child to attend the formerly whites-only William Frantz Elementary School in Louisiana during the New Orleans school desegregation crisis on November 14, 1960. Bridges attended a segregated kindergarten in 1959. In early 1960, she was one of six black children in New Orleans to pass the test that determined whether they could go to the all-white William Frantz Elementary School. Two of the six decided to stay at their old school, Bridges went to Frantz by herself, and three children (Gail Etienne, Leona Tate and Tessie Prevost) were transferred to the all-white McDonogh No. 19 Elementary School. All four 6-year-old girls were escorted to and from school by federal marshals due to crowds of angry protestors opposing school integration.

Photograph credit: United States Department of Justice; restored by Adam Cuerden

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  1. ^ Proline is an exception to this general formula. It lacks the NH2 group because of the cyclization of the side chain.