Articles tagged with Urban Populations
A study by Stanley Changnon and colleagues found no evidence of an increase in catastrophic weather events, despite rising property losses. The growth of losses is attributed to the increasing population in coastal and urban areas, leading to a larger target-at-risk.
A recent USGS study has found that urban sprawl, not fire suppression, is largely responsible for the devastating wildfires in southern and central-coastal California. The researchers suggest that strategic management of buffer zones between urban lands and wildlands could help mitigate ecological impacts.
A new NASA study reveals Atlanta's urban heat island effect, with temperatures 10 degrees higher than surrounding areas, worsened by human land use changes. The increased heat intensifies smog levels and creates thunderstorms, which can also have beneficial effects in cleaning the atmosphere.
A systematic bird survey of the Phoenix metropolitan area has been ongoing since 1998, with over 150 species sighted. The database is a valuable resource for scientists studying urban landscape structure and its impact on avian populations.
Researchers found a near-100% loss of hatchlings due to predation and lack of migration between two forest preserves. The study suggests genetic isolation and potential extinction threats for the Illinois population.
A team of biologists developed a new method to census deer populations in urban areas, employing helicopters with trained observers and Global Positioning System (GPS) technology. The study achieved a high detection rate of 79%, providing valuable insights for managing deer populations in ecological harmony.
Studies show a significant increase in PAHs in reservoirs and river sediments in suburban areas of major cities, contradicting efforts to reduce pollution. Urbanization is linked to the accumulation of these carcinogenic compounds, which are typically not detectable in water samples.
Historically, colleges were established near trade centers, but today, more than half of four-year universities and two-year colleges are metropolitan institutions. This shift has significant implications for urban economies. The majority of institutions are now located near where people live, reflecting a change in the public's percep...
A new study reveals that Hispanics are increasingly settling in the heartland and Sun Belt regions of the US, attracted by job growth and economic opportunities. The fastest growth occurred in states such as Georgia, Maryland, Nebraska, Iowa, Minnesota, and Nevada.
A 1998 study predicts that global warming will increase the potential transmission of dengue fever in temperate regions. The researchers used computer models to simulate climate change and found that a relatively small temperature rise can lead to an increase in epidemic potential, allowing for more efficient virus spread.
Linguistics professor John Rickford presents evidence that black and white vernaculars in America exhibit distinct differences, even in island enclaves with frequent contact. He argues that limited social interaction and powerful social norms contribute to these divergences, which have been developing over centuries.
Millions of street children worldwide face numerous health risks due to lack of basic nutrition, sanitation, and water supplies. UNICEF official Ximena de la Barra identifies successful programs that involve child-to-child outreach, community engagement, and planning to address these issues.
The Hayward Fault's southern end has moved at double the rate of its northern portion, causing rocks to be 'piled up' on one side and stretched on the other. This increased strain suggests a magnitude 6 earthquake could occur in the near future.
Researchers are studying the impact of Atlanta's growth on its air quality and temperatures over two decades. Trees have been found to reduce temperatures, with a difference of up to 31 degrees between paved areas and tree-lined spaces. The study aims to provide insights for cities reshaping themselves for comfort and lower heating bills.
A study by the University of Illinois found that rural US counties gained greater access to computer networks and digital hardware between 1986 and 1992. Fiber optic mileage in the US multiplied twentyfold during this period, indicating a wider dissemination of digital technology.
Researchers investigated urbanized watersheds in four US regions over 50 years, comparing stream flow data with population growth. They found that higher population densities led to increased stream flow despite lower precipitation levels.
The U.S. Geological Survey detected MTBE in urban stormwater samples from 16 cities, with concentrations below the EPA's health advisory limit. In New England, MTBE was detected in 24% of ground-water samples, also at low levels.
A new bait made of natural substances has been discovered that kills cockroaches by disrupting their uric acid production, a crucial resource for survival. The bait, developed by Dr. Heather Wren, is effective against both resistant and susceptible strains and shows promise in controlling large populations of German cockroaches.