|
George Ledyard Stebbins, Jr.
George Ledyard Stebbins Jr. (January 6, 1906 – January 19, 2000) was an American botanist and geneticist who is widely regarded as one of the leading evolutionary biologists of the 20th century. Stebbins received his Ph.D. in botany from Harvard University in 1931. He went on to the University of California, Berkeley, where his work with E. B. Babcock on the genetic evolution of plant species, and his association with a group of evolutionary biologists known as the Bay Area Biosystematists, led him to develop a comprehensive synthesis of plant evolution incorporating genetics. His most important publication was '' Variation and Evolution in Plants'', which combined genetics and Darwin's theory of natural selection to describe plant speciation. It is regarded as one of the main publications which formed the core of the modern synthesis and still provides the conceptual framework for research in plant evolutionary biology; according to Ernst Mayr, "Few later works dealing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Mayr
Ernst Walter Mayr (; 5 July 1904 – 3 February 2005) was one of the 20th century's leading evolutionary biologists. He was also a renowned taxonomist, tropical explorer, ornithologist, philosopher of biology, and historian of science. His work contributed to the conceptual revolution that led to the modern evolutionary synthesis of Mendelian genetics, systematics, and Darwinian evolution, and to the development of the biological species concept. Although Charles Darwin and others posited that multiple species could evolve from a single common ancestor, the mechanism by which this occurred was not understood, creating the '' species problem''. Ernst Mayr approached the problem with a new definition for species. In his book '' Systematics and the Origin of Species'' (1942) he wrote that a species is not just a group of morphologically similar individuals, but a group that can breed only among themselves, excluding all others. When populations within a species become is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carpinteria, California
Carpinteria (; es, Carpintería, meaning "Carpentry") is a small seaside city in southeastern Santa Barbara County, California. Located on the Central Coast of California, it had a population of 13,264 at the 2020 census. Carpinteria is a popular surf destination; the city embraced the slogan "World's Safest Beach" in 1912, which it still uses today. History Carpinteria was home to a Chumash village during pre-colonial times, which was known as Šujtu. In 1769, the Spanish Portolá expedition came west along the beach from the previous night's encampment at Rincon. The explorers found a large native village on the point of land where Carpinteria Pier is today. The party camped nearby on August 17. Fray Juan Crespí, a Franciscan missionary travelling with the expedition, noted that "Not far from the town we saw some springs of pitch. The Indians have many canoes, and at the time were building one, for which reason the soldiers named this town La Carpinteria" (the carpent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cate School
Cate School is a highly selective, coeducational university-preparatory school for boarding and day students in grades 9-12 located in Carpinteria, California, eleven miles from Santa Barbara. The school has a current enrollment of 270 students from 31 different states and 18 foreign countries. According to Niche, Cate School is ranked as the 13th best boarding school in the United States and the best in California. History Beginnings Cate School was founded in 1910 by Curtis Wolsey Cate, a 25-year-old graduate of Roxbury Latin School and Harvard University. Originally established in 1910 as the Miramar School, then changed a year later in 1911 to the Santa Barbara School (or SBS), the school opened as a prep school for boys in grades 7 to 12, with its first academic year enrolling 12 students in total. In its early years, the school did not include amenities such as heat, hot water, or electricity, with Mr. Cate continuing to develop the 150 acres of natural landscape he had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Barbara, California
Santa Barbara ( es, Santa Bárbara, meaning "Saint Barbara") is a coastal city in Santa Barbara County, California, of which it is also the county seat. Situated on a south-facing section of coastline, the longest such section on the West Coast of the United States, the city lies between the steeply rising Santa Ynez Mountains and the Pacific Ocean. Santa Barbara's climate is often described as Mediterranean, and the city has been dubbed "The American Riviera". According to the 2020 U.S. Census, the city's population was 88,665. In addition to being a popular tourist and resort destination, the city has a diverse economy that includes a large service sector, education, technology, health care, finance, agriculture, manufacturing, and local government. In 2004, the service sector accounted for 35% of local employment. Education in particular is well represented, with four institutions of higher learning nearby: the University of California, Santa Barbara, Santa Barbara City C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuberculosis
Tuberculosis (TB) is an infectious disease usually caused by '' Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can also affect other parts of the body. Most infections show no symptoms, in which case it is known as latent tuberculosis. Around 10% of latent infections progress to active disease which, if left untreated, kill about half of those affected. Typical symptoms of active TB are chronic cough with blood-containing mucus, fever, night sweats, and weight loss. It was historically referred to as consumption due to the weight loss associated with the disease. Infection of other organs can cause a wide range of symptoms. Tuberculosis is spread from one person to the next through the air when people who have active TB in their lungs cough, spit, speak, or sneeze. People with Latent TB do not spread the disease. Active infection occurs more often in people with HIV/AIDS and in those who smoke. Diagnosis of active ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Episcopal Church In The United States Of America
The Episcopal Church, based in the United States with additional dioceses elsewhere, is a member church of the worldwide Anglican Communion. It is a mainline Protestant denomination and is divided into nine provinces. The presiding bishop of the Episcopal Church is Michael Bruce Curry, the first African-American bishop to serve in that position. As of 2022, the Episcopal Church had 1,678,157 members, of whom the majority were in the United States. it was the nation's 14th largest denomination. Note: The number of members given here is the total number of baptized members in 2012 (cf. Baptized Members by Province and Diocese 2002–2013). Pew Research estimated that 1.2 percent of the adult population in the United States, or 3 million people, self-identify as mainline Episcopalians. The church has recorded a regular decline in membership and Sunday attendance since the 1960s, particularly in the Northeast and Upper Midwest. The church was organized after the Amer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acadia National Park
Acadia National Park is an American national park located along the mid-section of the Maine coast, southwest of Bar Harbor. The park preserves about half of Mount Desert Island, part of the Isle au Haut, the tip of the Schoodic Peninsula, and portions of 16 smaller outlying islands. It protects the natural beauty of the rocky headlands, including the highest mountains along the Atlantic coast. Acadia boasts a glaciated coastal and island landscape, an abundance of habitats, a high level of biodiversity, clean air and water, and a rich cultural heritage. The park contains the tallest mountain on the Atlantic Coast of the United States ( Cadillac Mountain), exposed granite domes, glacial erratics, U-shaped valleys, and cobble beaches. Its mountains, lakes, streams, wetlands, forests, meadows, and coastlines contribute to a diversity of plants and animals. Weaved into this landscape is a historic carriage road system financed by John D. Rockefeller Jr. In total, it encompass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Desert, Maine
Mount Desert is a town on Mount Desert Island in Hancock County, Maine, United States. The population was 2,146 at the 2020 census. Incorporated in 1789, the town currently encompasses the villages of Otter Creek, Seal Harbor, Northeast Harbor, Somesville, Hall Quarry, and Pretty Marsh. Geography According to the United States Census Bureau, the town has a total area of , of which is land and is water. Demographics 2010 census As of the census of 2010, there were 2,053 people, 984 households, and 586 families living in the town. The population density was . There were 2,287 housing units at an average density of . The racial makeup of the town was 98.1% White, 0.3% African American, 0.1% Native American, 0.7% Asian, 0.1% from other races, and 0.7% from two or more races. Hispanic or Latino of any race were 0.9% of the population. There were 984 households, of which 20.9% had children under the age of 18 living with them, 51.0% were married couples living together, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Medal Of Science
The National Medal of Science is an honor bestowed by the President of the United States to individuals in science and engineering who have made important contributions to the advancement of knowledge in the fields of behavioral and social sciences, biology, chemistry, engineering, mathematics and physics. The twelve member presidential Committee on the National Medal of Science is responsible for selecting award recipients and is administered by the National Science Foundation (NSF). History The National Medal of Science was established on August 25, 1959, by an act of the Congress of the United States under . The medal was originally to honor scientists in the fields of the "physical, biological, mathematical, or engineering sciences". The Committee on the National Medal of Science was established on August 23, 1961, by executive order 10961 of President John F. Kennedy. On January 7, 1979, the American Association for the Advancement of Science (AAAS) passed a resolution prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Philosophical Society
The American Philosophical Society (APS), founded in 1743 in Philadelphia, is a scholarly organization that promotes knowledge in the sciences and humanities through research, professional meetings, publications, library resources, and community outreach. Considered the first learned society in the United States, it has about 1,000 elected members, and by April 2020 had had only 5,710 members since its creation. Through research grants, published journals, the American Philosophical Society Museum, an extensive library, and regular meetings, the society supports a variety of disciplines in the humanities and the sciences. Philosophical Hall, now a museum, is just east of Independence Hall in Independence National Historical Park; it was designated a National Historic Landmark in 1965. History The Philosophical Society, as it was originally called, was founded in 1743 by Benjamin Franklin, James Alexander, Francis Hopkinson, John Bartram, Philip Syng, Jr. and others as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Academy Of Sciences
The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the National Academy of Medicine (NAM). As a national academy, new members of the organization are elected annually by current members, based on their distinguished and continuing achievements in original research. Election to the National Academy is one of the highest honors in the scientific field. Members of the National Academy of Sciences serve ''pro bono'' as "advisers to the nation" on science, engineering, and medicine. The group holds a congressional charter under Title 36 of the United States Code. Founded in 1863 as a result of an Act of Congress that was approved by Abraham Lincoln, the NAS is charged with "providing independent, objective advice to the nation on matters related to science and technology. ... to provide scien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_Class_of_1910.jpg "Click for more on -> Cate School")
.JPG "Click for more on -> National Academy Of Sciences")