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1,000+ results for "Geography"

Consequences of being rich

A new study found that wealth and population density are the primary factors driving invasive species in Europe, surpassing climate and geography. Human activities like trade and travel have led to a surge in introduced species, causing ecosystem disruption and native species displacement.

SourceHelmholtz Association·JournalProceedings of the National Academy of Sciences·DateJun 16, 2010

AMA's position on coverage expansion was inconsistent with the views of most physicians

A recent study published in the New England Journal of Medicine found that most physicians and American Medical Association (AMA) members opposed the AMA's position on coverage expansions. The survey of 5,157 physicians revealed only 12.5% supported the AMA's views, with notable disparities based on specialty, income, and demographics.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalNew England Journal of Medicine·DateJun 9, 2010

Men and women respond differently to stress

A University of Montreal study found that men and women respond differently to stress, with high blood pressure and heart rate in women who are more defensive. Older men with low defensive reactions have higher cardiovascular rates. The study suggests that socialization and maintaining self-esteem contribute to these responses.

SourceUniversity of Montreal·JournalPsychophysiology·DateMar 23, 2010

Seeing the hidden services of nature

A new tool has been developed to analyze and manage a wide range of ecological services in agricultural ecosystems. Ecosystems that maximize agriculture tend to have fewer hidden ecosystem services, such as water purification and climate moderation, compared to more diverse landscapes.

SourceMcGill University·JournalProceedings of the National Academy of Sciences·DateMar 2, 2010

Fog has declined in past century along California's redwood coast

A study by University of California, Berkeley scientists found that California's coastal fog has decreased significantly over the past 100 years, from 56% to 42%, due to a decline in the coast-inland temperature gradient. This change may lead to drought-stress for redwood ecosystems and potentially impact recruitment of new trees.

SourceUniversity of California - Berkeley·JournalProceedings of the National Academy of Sciences·DateFeb 15, 2010

Supra-glacial lakes focus of study

Researchers studying supra-glacial lakes on the Greenland ice sheet seek to understand their role in shaping the ice sheet's topography. The lakes form when melting water collects in pools in the lower levels of the ice sheet, and drain rapidly through cracks in the ice.

Biologists merge methods, results from different disciplines to find new meaning in old data

Researchers argue that combining concepts and tools from multiple disciplines can yield new findings, citing examples such as J. John Sepkoski Jr.'s database of fossil records and synthetic paleobiology. The authors also highlight the potential of integrating methods, conceptual synthesis, and re-use of results to transform science.

Global temperatures could rise more than expected, new study shows

A new Yale University study suggests that current CO2 levels could lead to a greater temperature increase than previously thought, with temperatures potentially rising by 3 degrees Celsius or more. The research found that a relatively small rise in atmospheric CO2 was associated with substantial global warming during the mid- and early...

SourceYale University·JournalNature Geoscience·DateDec 20, 2009

It's not just dirt!

Interactive e-lessons developed by soil science educators engage learners with active learning strategies, interactive Flash animations, and experiential activities. These lessons aim to help students and the public recognize the critical importance of soil in addressing various issues.

SourceAmerican Society of Agronomy·JournalJournal of Natural Resources and Life Sciences Education·DateNov 25, 2009

Ancestry attracts, but love is blind

Research published in Genome Biology found that Mexicans prioritize partners with Native American and European ancestry, while Puerto Ricans prefer those with African and European heritage. Ancestry has a stronger influence on romance than previously thought, with non-random associations of genes across generations.

SourceBMC (BioMed Central)·JournalGenome Biology·DateNov 19, 2009

Sensing disasters from space

The HRS technology combines space sensors with ground and air measurements to provide advance warnings of natural disasters such as forest fires. It can also identify water contamination, pollution spills and monsoon strikes, offering valuable insights for property developers and authorities.

SourceAmerican Friends of Tel Aviv University·JournalSoil Science Society of America Journal·DateOct 22, 2009

A thermometer for the Earth

The Optical Soil Dipstick (OSD) measures soil health through a small hole in the surface of the earth, providing information on pollution, water needs and crop condition. The device could help solve the mystery of global warming's effects on farming and water resources.

SourceAmerican Friends of Tel Aviv University·JournalSoil Science Society of America Journal·DateOct 1, 2009

More oxygen -- colder climate

A new analytical method developed by researchers at the University of Copenhagen reveals a significant correlation between oxygen content in seawater and global cooling. The study indicates two periods in Earth's history with large increases in oxygen content, which led to temperature decreases and potentially enabled life in deep oceans.

SourceUniversity of Copenhagen·JournalNature·DateSep 9, 2009