Under the APG IV system of flowering plant classification, Asparagales are the largest order of monocots with 14 families, [5 ] 1,122 genera, and about 36,000 species, with members as varied as asparaguses, orchids, yuccas, irises, onions…
Joseph Hayes (September 14, 1835 – August 19, 1912) was a Harvard graduate, civil engineer, and a brigadier general of the Union Army who commanded two brigades of the 5th Army Corps during the American Civil War.
Following the inception of Charles Darwin's theory of natural selection in 1838, the development of Darwin's theory to explain the "mystery of mysteries" of how new species originated was his "prime hobby" in the background to his main…
It lies on the western bank of the Potomac River approximately 7 miles (11 km) south of D.C. The city's population of 159,467 at the 2020 census made it the sixth-most populous city in Virginia and 169th-most populous city in the U.S. [4…
Ascension Island is an isolated and relatively young volcanic island in the South Atlantic Ocean, some 100 km (62 mi) west of the mid-Atlantic Ridge, 1,504 km (935 mi) from Liberia (Cape Palmas), and 2,232 km (1,387 mi) from Brazil (Recife…
El Manual diagnóstico y estadístico de los trastornos mentales o MDE (en el original en inglés, Diagnostic and Statistical Manual of Mental Disorders o DSM), editado por la Asociación Estadounidense de Psiquiatría (en inglés, American…
The records referenced in these pages highlight some of the records pertaining to slavery that are available at the National Archives. Information and records are arranged by government branch and record group.