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 |
The U.S. health system is a mix of public and private, for-profit and nonprofit insurers and health care providers. The federal government provides funding for the national Medicare program for adults age 65 and older and some people with disabilities as well as for various programs for veterans and low-income people, including Medicaid and the Children’s Health Insurance Program. States manage and pay for aspects of local coverage and the safety net. Private insurance, the dominant form of coverage, is provided primarily by employers. The uninsured rate, 8.5 percent of the population, is down from 16 percent in 2010, the year that the landmark Affordable Care Act became law. Public and private insurers set their own benefit packages and cost-sharing structures, within federal and state regulations.
Mediterranean home styles are made of stucco, so they’re most common in warm climate states like Arizona and California. These homes grew in popularity in the 1920s and ‘30s after being featured as homes for the rich and famous on the silver screen.
Mediterranean-style homes include Spanish and Italian architectural elements. These key features make them easy to spot:
- Stucco walls painted white or brown
- Classic red tile roofs
- Arched doorways and windows
- Ornamentation including wrought iron, heavy doors, and decorative tiles
Mediterranean homes still carry the feelings of class and luxury they were built with over 100 years ago, with an added element of history and charm.
Cape Cod homes are similar to the British or American Colonial homes, though they originated further north in Cape Cod, Massachusetts. These are often seen as the classic American family home since the style’s revival in the 20th Century.
Cape Cod homes are identified by their:
- Shingle exteriors
- Modest size and ornamentation compared to British Colonial homes
- Originally single-story homes
- Large central fireplaces
- Attic lofts (20th-century revival)
- Dormer windows (20th-century revival)
Cape Cod homes are built of local wood and stone to withstand the north-eastern weather. This exterior weathering provides an iconic weathered-blue color to these 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.
Victorian homes were built between 1837 and 1901 while Queen Victoria reigned in Britain. “Victorian” actually refers to multiple styles that vary in influence, but each features ornate detailing and asymmetrical floor plans.
The key features of a Victorian-era home include:
- Elaborate woodwork and trim
- Towers, turrets, and dormer windows
- Steep gabled roofs
- Partial or full-width porches
Victorian homes are all about ornamentation — industrialization allowed these homes to be produced en masse and across a variety of architectural styles.
A French Country home has a rustic yet upscale charm. French Country architecture is designed after French chateaus and became popular with American soldiers returning from World War I.
French Country homes offer a unique house style featuring:
- Steep pitched or hipped roofs
- Tall ceilings and windows
- Traditional materials including clay, stone, and brick offer a rustic appeal
- Exposed wooden beams in ceilings and walls
French Country homes are designed with their environment in mind. They often feature neutral colors with soft, nature-inspired pops of color like sunshine yellows and grass greens.
The American Academy of Arts and Sciences (abbreviation: AAA&S) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin,[1] Andrew Oliver, and other Founding Fathers of the United States.[2] It is headquartered in Cambridge, Massachusetts.
Membership in the academy is achieved through a thorough petition, review, and election process.[3] The academy's quarterly journal, Dædalus, is published by MIT Press on behalf of the academy.[4] The academy also conducts multidisciplinary public policy research.
The Academy was established by the Massachusetts legislature on May 4, 1780, charted in order "to cultivate every art and science which may tend to advance the interest, honor, dignity, and happiness of a free, independent, and virtuous people."[6] The sixty-two incorporating fellows represented varying interests and high standing in the political, professional, and commercial sectors of the state. The first class of new members, chosen by the Academy in 1781, included Benjamin Franklin and George Washington as well as several international honorary members. The initial volume of Academy Memoirs appeared in 1785, and the Proceedings followed in 1846. In the 1950s, the Academy launched its journal Daedalus, reflecting its commitment to a broader intellectual and socially-oriented program.[7]
Since the second half of the twentieth century, independent research has become a central focus of the Academy. In the late 1950s, arms control emerged as one of its signature concerns. The Academy also served as the catalyst in establishing the National Humanities Center in North Carolina. In the late 1990s, the Academy developed a new strategic plan, focusing on four major areas: science, technology, and global security; social policy and education; humanities and culture; and education. In 2002, the Academy established a visiting scholars program in association with Harvard University. More than 75 academic institutions from across the country have become Affiliates of the Academy to support this program and other Academy initiatives.[8]
The Academy has sponsored a number of awards and prizes,[9] throughout its history and has offered opportunities for fellowships and visiting scholars at the Academy.[10]
In July 2013, the Boston Globe exposed then president Leslie Berlowitz for falsifying her credentials, faking a doctorate, and consistently mistreating her staff.[11] Berlowitz subsequently resigned.
There was a renewed interest in handcrafted art and design following the industrial revolution. This became the “Arts and Crafts” era and paved the way for the Craftsman home, or “arts and crafts” home.
Craftsman homes focus on simplicity to counter the ornate stylings of Victorian homes. They’re also designed to highlight the craftsmanship of its builders and include:
- A low-pitched roof with overhanging eaves
- A covered porch
- Woodwork including exposed beams and built-in features like shelving
- Natural tones to complement the warmth from woodworking
Craftsman homes are favored for their character and are another versatile style that may borrow common elements from other home styles.
Georgian-style homes were one of the most common styles in the 18th century and showcased formal and classical details that previous homes didn’t. Georgian houses are similar to Federal houses, though they can be distinguished by:
- A crown and pilasters framing the front door
- Decorative quoins or bricks at the corners
- Smooth decorative blocks as moulding
You can also find regional variations with hooded front doors and pent roofs between levels.
Colonial-style houses are simple rectangular homes that became popular in the 1600s as colonists settled the East Coast. These homes have many variations due to the fact that new communities all over the world built Colonial-style homes to suit their culture.
British Colonial style is the most common and recognizable Colonial home. Its key features include:
- A side-gabled roof
- Two floors
- A centered front door
- Symmetrical windows on either side of the door
The rectangular shape and interest in symmetry are seen in other Colonial house styles, too. Materials and decorative features can vary by region, as some Colonial houses sport brick exteriors and ornate trim, while others showcase shingle siding and simple shutters.
These are also some of the cheapest types of houses to build.
Mid-century Modern designs are nothing new and have influenced interior design, graphic art, and house styles. Mid-century Modern homes are designed to embrace minimalism and nature. They’re also often modeled to appeal to a futuristic or abstract concept.
Mid-century Modern homes can be identified by their:
- Flat planes and clean lines
- Monochromatic brickwork
- Asymmetrical home layouts
- Nature-inspired interior
- Interior level shifts between rooms
Mid-century architecture is still widely popular today, as are Mid-century Modern interior design and furniture trends.
Townhomes are common in cities and densely populated neighborhoods. Townhouses are tall and narrow homes designed to make the most out of vertical space without too much of a yard or garden area.
Homes are considered townhouses when they:
- Share one or two walls with adjacent homes
- Have their own entrances
- Are built with multiple floors to maximize vertical space
- Often share a similar style to their neighbors’ homes and may operate under an HOA
Townhouses can be built to mimic other architecture styles, like Italianate and Greek Revival, while maintaining the condensed, vertical floor plan.