Tech
In many regions of the world, populations of large mammalian herbivores have been displaced by cattle breeding, for example in Kenya the hippos by large herds of cattle. This can change aquatic ecosystems due to significant differences in the amount and type of dung input. Researchers from the University of Eldoret in Kenya, the University of Innsbruck and the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) have therefore taken a closer look at the dung of hippopotamus and cattle.
A team of researchers led by Arizona State University (ASU) School of Earth and Space Exploration professor Lindy Elkins-Tanton has provided the first ever direct evidence that extensive coal burning in Siberia is a cause of the Permo-Triassic Extinction, the Earth's most severe extinction event. The results of their study have been recently published in the journal Geology.
The first city-wide health impact assessment of the estimated effects of a tree canopy initiative on premature mortality in Philadelphia suggests that increased tree canopy could prevent between 271 and 400 premature deaths per year. The study by Michelle Kondo, a Philadelphia-based research social scientist with the U.S.
As the first pandemic in the digital era, COVID-19 has created an urgent need for coordinated mechanisms to respond to the outbreak across health sectors. While digital health solutions have been identified as promising approaches to address this challenge, their successful implementation depends on a series of socio-economic, ethical, legal and cultural factors and requires the appropriate enabling expertise, infrastructure and cohesion among all stakeholders concerned.
CORVALLIS, Ore. - The lives of honeybees are shortened - with evidence of physiological stress - when they are exposed to the suggested application rates of two commercially available and widely used pesticides, according to new Oregon State University research.
In a study published in the journal PLOS ONE, honeybee researchers in OSU's College of Agricultural Sciences found detrimental effects in bees exposed to Transform and Sivanto, which are both registered for use in the United States and were developed to be more compatible with bee health.
Johns Hopkins Kimmel Cancer Center researchers from the Department of Radiation Oncology and Molecular Radiation Sciences identified a lipid-regulating protein that conveys what the researchers describe as "superpowers" onto prostate cancer cells, causing them to aggressively spread.
A new study led by the University of Hawai?i Cancer Center looks into how and why certain individuals develop cancer and others do not. The research was published in Nature Reviews Cancer, one of the most influential and prestigious journals in medicine and science. In addition to lead author Michele Carbone and co-author Haining Yang, collaborators include top cancer researchers, including a Nobel Laureate, and several members of the U.S. and European Academy of Sciences.
CHICAGO--- How do you monitor patients who have COVID-19 symptoms but are not ill enough to come to the emergency department? And how do you help those patients feel cared about and less frightened while convalescing at home?
That was the dilemma facing Dr. Jeffrey Linder, Northwestern Medicine chief of general internal medicine and geriatrics.
Transitional waters, those situated between land and the sea, such as lagoons and estuaries, are more exposed to human activity and these waters are slowly refreshed, meaning that their ecosystems are more vulnerable to pollution. In order to understand the environmental health of Tunisia's coastal lagoons, a Department of Biochemistry and Molecular Biology research team at the University of Cordoba used a carpet shell clam (Venerupis decussata) as a bioindicator to get an image of pollution in these ecosystems.
Osaka, Japan - The need to be mindful consumers is becoming a priority for an ever-growing portion of society. This means that achieving efficient and environmentally sustainable chemical processes is more important than ever before. One way of influencing reaction efficiency is catalysis. However, when choosing a catalyst there is often a need to trade-off different factors including performance and cost.
While the first half of the twentieth century marked a period of extraordinary violence, the world has become more peaceful in the past 30 years, a new statistical analysis of the global death toll from war suggests.
The study, by mathematicians at the University of York, used new techniques to address the long-running debate over whether battle deaths have been declining globally since the end of the Second World War.
A new study in The Auk: Ornithological Advances, published by Oxford University Press, suggests that wildfires change the types of songs sung by birds living in nearby forests.
Hermit Warblers sing a formulaic song to attract mates, in contrast with a repertoire of more complex songs they use to defend territories. There is often a single, dominant formulaic song within the same geographic area. In the United States, the summer range of Hermit Warblers is limited to the Pacific Coast states of California, Oregon, and Washington.
The sugar coating on cancer cells helps them thrive, and a new study indicates patients with cervical cancer who make antibodies to those sugars appear to do better when they also receive internal radiation therapy.
WEST LAFAYETTE, Ind. - Conventional melanoma therapies, including chemotherapy and radiotherapy, suffer from the toxicity and side effects of repeated treatments due to the aggressive and recurrent nature of melanoma cells.
Less invasive topical chemotherapies have emerged as alternatives, but their widespread uses have been hindered by both the painful size of the microneedles and the rapidly dissolving behavior of polymers used in the treatments.
All living organisms suffer injuries. Animals and humans have movable cells, specialized in finding, approaching, and healing wounds. Plant cells, however, are immobile and can't encapsulate the damage. Instead, adjacent cells multiply or grow to fill the injury. In this precision process, each unique cell decides whether it will stretch or divide to fill the wound. Even though scientists study regeneration in plants since the mid-19th century, the cell's 'reasons' for either choice remained unclear.