Baltimore in the context of "Walters Art Museum"

Commuting is periodically recurring travel between a place of residence and place of work or study, where the traveler, referred to as a commuter, leaves the boundary of their home community. By extension, it can sometimes be any regular or often repeated travel between locations, even when not work-related. The modes of travel, time taken and distance traveled in commuting varies widely across the globe. Most people in least-developed countries continue to walk to work. The cheapest method of commuting after walking is usually by bicycle, so this is common in low-income countries but is also increasingly practised by people in wealthier countries for environmental, health, and often time reasons. In middle-income countries, motorcycle commuting is very common.

The next technology adopted as countries develop is more dependent on location: in more populous, older cities, especially in Eurasia mass transit (rail, bus, etc.) predominates, while in smaller, younger cities, and large parts of North America and Australasia, commuting by personal automobile is more common. A small number of very wealthy people, and those working in remote locations around the world, also commute by air travel, often for a week or more at a time rather than the more typical daily commute. Transportation links that enable commuting also impact the physical layout of cities and regions, allowing a distinction to arise between mostly-residential suburbs and the more economically focused urban core of a city (process known as suburban sprawl), but the specifics of how that distinction is realized remain drastically different between societies, with Eurasian "suburbs" often being more densely populated than North American "urban cores".

Maryland (US: /ˈmɛrɪlənd/ MERR-il-ənd) is a state in the Mid-Atlantic and South Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east, as well as with the Atlantic Ocean to its east, and the national capital and federal district of Washington, D.C. to the southwest. With a total area of 12,407 square miles (32,130 km), Maryland is the ninth-smallest state by land area, and its population of 6,177,224 ranks it the 18th-most populous state and the fifth-most densely populated. Maryland's capital city is Annapolis, and the state's most populous city is Baltimore.

Maryland's coastline was first explored by Europeans in the 16th century. Prior to that, it was inhabited by several Native American tribes, mostly the Algonquian peoples. One of the original Thirteen Colonies, the Province of Maryland was founded in 1634 by George Calvert, 1st Baron Baltimore, a Catholic convert who sought to provide a religious haven for Catholics persecuted in England. In 1632, Charles I of England granted Lord Baltimore a colonial charter, naming the colony after his wife, Henrietta Maria. In 1649, the Maryland General Assembly passed an Act Concerning Religion, which enshrined the principle of toleration. Religious strife was common in Maryland's early years, and Catholics remained a minority, albeit in greater numbers than in any other English colony.

The white flight, also known as white exodus, refers to the sudden or gradual large-scale migration of white people from areas becoming more racially or ethnoculturally diverse to more racially homogenous suburban or exurban regions. The term has more recently been applied to other migrations by whites from older, inner suburbs to rural areas, as well as from the American Northeast and Midwest to the milder climate in the South and West. The term 'white flight' has also been used for large-scale post-colonial emigration of whites from Africa, or parts of that continent, driven by levels of violent crime and anti-colonial or anti-white state policies. Starting in the 1950s and 1960s, the terms became popular, especially in the United States.

Migration of middle-class white populations was observed during the civil rights movement in the 1950s and 1960s out of cities such as Baltimore, Cleveland, Detroit, Kansas City and Oakland, although racial segregation of public schools had ended there long before the Supreme Court of the United States' decision Brown v. Board of Education in 1954. In the 1970s, attempts to achieve effective desegregation (or "integration") by means of busing in some areas led to more families' moving out of former areas. More generally, some historians suggest that white flight occurred in response to population pressures, both from the large migration of blacks from the rural Southern United States to urban cities of the Northeastern United States, Midwestern United States and the Western United States in the Great Migration and the waves of new immigrants from around the world.

In the United States, an independent city is a city that is not in the territory of any county or counties and is considered a primary administrative division of its state. Independent cities are classified by the United States Census Bureau as "county equivalents" and may also have similar governmental powers to a consolidated city-county or a unitary authority. However, in the case of a consolidated city-county, a city and a county were merged into a unified jurisdiction in which the county at least nominally exists to this day, whereas an independent city was legally separated from any county or merged with a county that simultaneously ceased to exist even in name.

Of the 41 independent U.S. cities, 38 are in Virginia, whose state constitution makes them a special case. The three independent cities outside Virginia are Baltimore, Maryland; St. Louis, Missouri; and Carson City, Nevada. Baltimore is the most populous independent city in the United States.

Roman glass objects have been recovered across the Roman Empire in domestic, industrial and funerary contexts. Glass was used primarily for the production of vessels, although mosaic tiles and window glass were also produced. Roman glass production developed from Hellenistic technical traditions, initially concentrating on the production of intensely coloured cast glass vessels.

However, during the 1st century AD the industry underwent rapid technical growth that saw the introduction of glass blowing and the dominance of colourless or 'aqua' glasses. Production of raw glass was undertaken in geographically separate locations to the working of glass into finished vessels, and by the end of the 1st century AD large scale manufacturing resulted in the establishment of glass as a commonly available material in the Roman world, and one which also had technically very difficult specialized types of luxury glass, which must have been very expensive, and competed with silver and gold as elite tableware.

Etruscan art was produced by the Etruscan civilization in central Italy between the 10th and 1st centuries BC. From around 750 BC it was heavily influenced by Greek art, which was imported by the Etruscans, but always retained distinct characteristics. Particularly strong in this tradition were figurative sculpture in terracotta (especially life-size on sarcophagi or temples), wall-painting and metalworking especially in bronze. Jewellery and engraved gems of high quality were produced.

Etruscan sculpture in cast bronze was famous and widely exported, but relatively few large examples have survived (the material was too valuable, and recycled later). In contrast to terracotta and bronze, there was relatively little Etruscan sculpture in stone, despite the Etruscans controlling fine sources of marble, including Carrara marble, which seems not to have been exploited until the Romans.

A research university or a research-intensive university is a university that is committed to research as a central part of its mission. They are "the key sites of knowledge production", along with "intergenerational knowledge transfer and the certification of new knowledge" through the awarding of doctoral degrees, and continue to be "the very center of scientific productivity". They can be public or private, and often have well-known brand names.

Undergraduate courses at many research universities are often academic rather than vocational and may not prepare students for particular careers, but many employers value degrees from research universities because they teach fundamental life skills such as critical thinking. Globally, research universities are overwhelmingly public institutions, while some countries like the United States and Japan also have well-known private research institutions.

The Acela (/əˈsɛlə/ ə-SEL-ə; originally the Acela Express until September 2019) is Amtrak's flagship passenger train service along the Northeast Corridor (NEC) in the Northeastern United States between Washington, D.C., and Boston via 13 intermediate stops, including Baltimore, New York City and Philadelphia. Acela trains are the fastest in the Americas, reaching 150–160 miles per hour (240–260 km/h), qualifying as high-speed rail, but only for approximately 40 miles (64 km) of the 457-mile (735 km) route.

In fiscal year 2024, Acela carried more than 3.2 million passengers, second only to the slower and less expensive Northeast Regional, which had over 10.8 million passengers. Ridership was down from the pre-COVID-19 pandemic high of 3,557,455 passengers in 2019. Its 2024 revenue of $531 million was around 21% of Amtrak's total.