In many parts of the world, there is an imbalance in the food chain.
Without top predators such as wolves and grizzly bears, smaller meat-eating animals like coyotes and foxes or grazers such as deer and elk can balloon in population, unchecked. This can initiate more deer-vehicle collisions, scavenging by urban coyotes and other unnatural human-animal interactions.
March 18, 2020--Once-daily treatment of patients with chronic obstructive pulmonary disease (COPD) with an inhaler combining fluticasone furoate (FF), umeclidinium (UMEC) and vilanterol (VI) reduced all-cause mortality by 42 percent, according to new research published online in the American Thoracic Society's American Journal of Respiratory and Critical Care Medicine.
A research team from ITMO University, with the help of their colleagues from MIPT (Russia) and Politecnico di Torino (Italy), has predicted a novel type of topological quantum state of two photons. Scientists have also applied a new, affordable experimental method for testing this prediction. The method relies on the analogy: instead of expensive experiments with quantum systems of two or more entangled photons, the researchers have used resonant electric circuits of higher dimensionality described by similar equations.
Colorectal carcinoma (CRC), the most common form of intestinal cancer, is the second leading cause of cancer related death worldwide. While some patients have a genetic predisposition to the disease, the majority of cases are sporadic and largely influenced by the ever-increasing "Western lifestyle", which includes obesity, poor diet and physical inactivity.
Adult Pacific salmon spend a great portion of their life in the ocean. But their life began along the banks of freshwater streams. Their life will end there, as well. These important steps in the lifecycle of salmon play a role in the health of streambank ecosystems.
David D'Amore and a team of scientists studied how different soils respond to the delivery of "salmon-derived nutrients." These nutrients come from adult salmon returning to their home streams, known as spawning. The study sites were forested ecosystems in Alaska's coastal temperate rainforest.
The environmental effects of agriculture and food are hotly debated. But the most widely used method of analysis often tends to overlook vital factors, such as biodiversity, soil quality, pesticide impacts and societal shifts, and these oversights can lead to wrong conclusions on the merits of intensive and organic agriculture. This is according to a trio of researchers writing in the journal Nature Sustainability.
Showy peacock feathers, extravagant elk antlers and powerful crayfish claws are just a few examples of the ostentatious animal extremes used to compete for and attract mates, a process called sexual selection.
Now, thanks to Arizona State University researcher Zackary Graham and his colleagues, we can add the "unicorn of the seas," the narwhal, to the list.
UNIVERSITY PARK, Pa. -- Pesticide-coated seeds -- such as neonicotinoids, many of which are highly toxic to both pest and beneficial insects -- are increasingly used in the major field crops, but are underreported, in part, because farmers often do not know what pesticides are on their seeds, according to an international team of researchers. The lack of data may complicate efforts to evaluate the value of different pest management strategies, while also protecting human health and the environment.
Scientists have proved one of Charles Darwin's theories of evolution for the first time - nearly 140 years after his death.
Laura van Holstein, a PhD student in Biological Anthropology at St John's College, University of Cambridge, and lead author of the research published today (March 18) in Proceedings of the Royal Society, discovered mammal subspecies play a more important role in evolution than previously thought.
Her research could now be used to predict which species conservationists should focus on protecting to stop them becoming endangered or extinct.
Hamilton, ON (March 17, 2020) - An independent investigative as well as an international offender database are needed to tackle allegations of abuse in elite youth sport properly, urges a McMaster University expert, in an editorial published online in the British Journal of Sports Medicine.