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 scientific advice to the government 'whenever called upon' by any government department."[2]
The Academy receives no compensation from the government for its services.[3]
The Academy currently has 2,984 members and international members. Existing members elect new members for life. Up to 120 members are elected every year; up to 30 foreign citizens may be elected as international members annually. The election process begins with a formal nomination, followed by a vetting period, and culminates in a final ballot at the Academy's annual meeting in April each year. Members are affiliated with a section -- a specific scientific field -- in one of six so-called "classes": (1) Physical and Mathematical Sciences; (2) Biological Sciences; (3) Engineering and Applied Sciences; (4) Biomedical Sciences; (5) Behavioral and Social Sciences; and (6) Applied Biological, Agricultural, and Environmental Sciences.[6] Since its founding, the Academy has elected 6,457 members. Harvard University is associated with the most members (329), some 5% of the all-time total. The top ten institutions, half of which are Ivy League universities, account for nearly 28% of all members ever elected.[11]
| Top 10 Primary Institutions | Members (1963-2022) |
|---|---|
| Harvard University | 329 |
| Stanford University | 250 |
| University of California, Berkeley | 242 |
| Massachusetts Institute of Technology | 206 |
| Yale University | 132 |
| Princeton University | 128 |
| California Institute of Technology | 126 |
| Columbia University | 125 |
| University of Chicago | 120 |
| University of Pennsylvania | 83 |
Queen Anne homes were popularized in the later Victorian era, beginning around 1880. This style is the quintessential Victorian home for many, with ornate woodworking and decor inside and out.
Queen Anne homes have key regional differences across the country, but maintain these essentials:
- Textured walls with decorative shingles or half-timbering
- Large round or polygonal tower at the home’s corner
- Steeply pitched and asymmetrical roof
- Decorative spindles on porches and trim
- Decorative single-pane or stained glass windows
Queen Anne architecture is most common in homes, but can also be seen in schools, churches, and office buildings.
Prairie-style homes were made famous by the architect Frank Lloyd Wright. These homes celebrate and complement the natural beauty of the Midwestern landscape with low and long shapes in the floor plan and building elements.
Prairie-style houses showcase:
- Long and low-to-the-ground builds
- Flat or shallow roofs with overhanging eaves
- Thin bricks or stucco exteriors to match the house shape
- Minimalist yet stylized ornamentation
Prairie houses inspired the flat planes and natural elements popular in Mid-century houses.
The Pueblo Revival was inspired by the indigenous Pueblo people’s architecture in the Southwestern US. Pueblo homes were made of adobe or stucco and designed to handle the extreme temperatures of the desert.
Architects in California began to explore the Pueblo style in the late 19th century and the Pueblo Revival style spread across New Mexico, Arizona, and Colorado.
The Pueblo Revival hit its peak in the 1930s in Santa Fe, and these Pueblo-style elements are still popular in the Southwest:
- Rounded corners and irregular shapes
- Earth tones that reflect the desert colors
- Stepped effects with higher floors becoming smaller
- Flat roofs with parapet trim
- Exposed roof beams extending past the walls
The Pueblo Revival style is also commonly called Adobe or Santa Fe style architecture.
The French Colonial house style can be seen around the world and has significant variety among its sub-styles.
French Colonial houses have the same symmetry as other Colonial homes with these distinct features:
- Dormer windows, including one centered above the door
- External stairs to enter higher floors
- Iron stairs and balconies
- Slightly raised basements to support the floor
French Colonial houses are most similar to Spanish Colonial houses and easily identified by their elaborate iron balconies, stairs, and entrances.
Modern Tudor homes are inspired by Medieval European Tudor homes and often have a charming cottage aesthetic. They’re popular on the East Coast and in parts of the Midwest.
Tudor homes are an easy style to identify. They feature:
- Steeply pitched gable roofs
- Exposed and decorative half-timbering with stucco exterior
- Mixed-material brick or stone walls
- Casement windows in groups or with diamond shapes
The Tudor Revival reached peak popularity in the 1920s and is still widely popular today.
1. From this valley they say you are going, I will miss your bright eyes and sweet smile, For they say you are taking the sunshine, that brightens our pathways awhile. (CHORUS) Come and sit by my side if you love me, do not hasten to bid me a-dieu, but remember the Red River Valley, and the cowboy who loved you so true.
2. I’ve been thinking a long time, my darlin’, Of the sweet words you never would say, now, alas, all my fond hopes must vanish. For they say you are going away. Repeat Chorus: Come and sit by my side if you love me, do not hasten to bid me a-dieu, but remember the Red River Valley, and the cowboy who loved you so true.
3. Do you think of the valley you’re leaving? Oh, how lonely and sad it will be! Do you think of the kind hearts you’re breaking, and the pain you are causing to me? Repeat Chorus: Come and sit by my side if you love me, do not hasten to bid me a-dieu, but remember the Red River Valley, and the cowboy who loved you so true.
4. I have promised you, darlin’, that never, will a word from my lips cause you pain; And my life, it will be yours forever If you only will love me again. Repeat Chorus: Come and sit by my side if you love me, do not hasten to bid me a-dieu, but remember the Red River Valley, and the cowboy who loved you so true.
Ranch house styles are the most searched style in the US today and are common in cities and suburbs across the country. There are various ranch house styles, including California and split-level ranch homes. The main distinguishing features between these styles are living space and home layout.
Ranch style homes feature:
- Single-story floor plans with low-pitched roofs
- Rectangular, “U,” or “L” shaped open floor plans
- Patio or deck space connected to the home
- Often includes a finished basement or attached garage
Ranch homes are the most popular homes in 34 US states — particularly in the Midwest and on the East Coast.
Gothic Revival architecture grew in the mid-19th century and was one of the early styles of Victorian-era homes. The Gothic Revival style takes influence from Medieval Europe and was designed as a country home. Architects believed the asymmetrical design and ornamentation complemented the nature of rural America.
Gothic Revival homes can be identified by their:
- Pointed arch in windows, doors, and decoration
- Elaborate wood trim vergeboards and bargeboards
- Steeply pitched roofs and front-facing gables
- Towers and turrets resembling medieval castles
Gothic Revival architecture was a popular style for schools and churches as well as rural homes.
Second Empire homes were a modern Victorian-era style that started in France before spreading through the Northeastern and Midwestern United States. Second Empire architecture features similar ornate Victorian trends, though generally offers a simplified Victorian aesthetic.
These elements help identify a Second Empire home:
- Uniquely shaped Mansard Roof
- Decorative window framing and dormers
- Decorative rails or balustrades around terraces and staircases
- Iron roof crest and eaves with support brackets
Second Empire homes are also easy to identify since they’re the only Victorian-era style that often features a symmetrical, rectangular floor plan.
