Articles tagged with World Population
The children and grandchildren of early immigrants played a significant role in shaping American society through their support for New Deal programs and Great Society reforms. The present share of Americans with recent family roots in other cultures is closer to 20-25%, reflecting the nation's increasing diversity.
Research finds American pikas' local extinction at 36% of US sites studied due to climate change. Pikas' inability to thermoregulate in extreme temperatures makes them susceptible to habitat loss and extinction.
Research by Queen's University finds that northern plant populations switch from sexual to asexual reproduction due to genetic factors causing sterility. This shift allows for faster adaptation to harsher environments, but may impact management decisions and species survival.
The study found that obstetric intervention rates were higher among refugees (1%) compared to the host population (0.45%), with maternal mortality being 2.5 times greater in the host population. The researchers emphasize the need for integrated health systems catering to both refugee and host populations.
A NASA-funded study analyzed urban growth among 30 mid-sized cities using Landsat satellite data, revealing three common spatial patterns of land development. The research provides current global assessments of urbanization, including growth in Africa, and highlights the need for updated maps to inform climate modeling and social scien...
The world's population will grow to 8.9 billion by 2050, with slower growth in richer countries and more urbanization in underdeveloped nations. The average population density is expected to rise from 45 people per square kilometer to 66 people per square kilometer.
A study found that selective hunting of male saiga antelopes for their horns is driving the species closer to extinction. The sex ratio has become severely imbalanced, with females outnumbering males by a ratio of 100:1, leading to reproductive collapse and population decline.
A recent study reveals significant discrepancies in shark fin trade reports, with estimates suggesting under-reporting of 24-49% compared to Hong Kong's quantities. The study highlights the need for continued monitoring and analysis in key seafood trading centers like Hong Kong.
Global analysis reveals 46% of the Earth's land surface is still intact wilderness, but only 2.4% of the world's population inhabits it. The areas are under threat from encroaching agriculture and resource extraction, with only 7% enjoying protection.
The Antioquian population in Colombia exhibits a high degree of European genetic influence, predominantly from southern Spain. This is reflected in the Y chromosome data, which show that 94% of males are of European descent.
A new study published at the CINP meeting found that treating patients with schizophrenia with Risperdal resulted in a daily savings of $2.80 US per patient, corresponding to an annual saving of $1,022 US. This cost-effectiveness analysis may translate into significant figures given the high prevalence of schizophrenia worldwide.
Dr. Yoav Horn founded the West Bank Cancer Program in 1978, helping to establish two oncology treatment centers and train Palestinian physicians. The program improved early cancer treatment and saved lives, according to data from a computerized registry of over 7,000 patient records.
The National Library of Medicine is launching an initiative to increase internet access to health information, with a focus on underserved communities. The 49 funded projects will provide computers and teach computer skills to individuals in rural, inner-city, and suburban areas.
A new computer model predicts that climate events like El Nino can affect Aedes aegypti mosquito populations, potentially leading to outbreaks of dengue disease. The model takes into account climatic variables such as precipitation, temperature, and humidity to forecast population booms and peaks.
Researchers calculate that populations are going extinct at a rate three to eight times faster than species loss, with significant implications for ecosystem services and human dependence on nature. The study reveals the often-overlooked benefits of individual populations, including genetic material and crop production.
The Isle Royale moose population has declined significantly, with only about 500 remaining after a devastating winter. This decline is attributed to the island's moose being severely stressed from lack of food and deep snows, with an abundance of balsam fir browse providing limited sustenance.