Research by a team of the world's leading oceanographers has proposed a new explanation for how the ocean absorbs and stores carbon, solving a riddle that has long puzzled scientists. It's well established that carbon in the atmosphere is absorbed by phytoplankton and transported to the ocean floor as the microscopic organisms die and sink by gravity through the water.
Scientists report the first cases of foot disease for endangered huemul deer in Chilean Patagonia in a study led by the Wildlife Conservation Society and the University of California, Davis. Culturally iconic, the huemul deer is featured alongside the condor on Chile's coat of arms and is a symbol of biodiversity in the region.
Milk is a staple of the human diet, full of key nutrients such as protein, carbohydrates, fats, and vitamins. Cow's milk in particular is one of the most-used dairy products globally, with over 800 million tons produced annually according to the United Nations Food and Agriculture Organization. Today, scientists report in ACS' Journal of Agricultural and Food Chemistry a comprehensive, centralized database of all known bovine milk compounds.
In 2015, a fluorosurfactant known by the trade name 'GenX' made headlines when researchers discovered it and related compounds in the Cape Fear River of North Carolina, a source of drinking water for many residents of the area. Now, researchers report in ACS' journal Environmental Science & Technology that they have detected the same per- and polyfluoroalkyl substances (PFASs) in the river, as well as some new ones, but their overall levels are decreasing.
The complete skeletal remains of a new species of Mongolian dinosaur fill in a gap in the evolution of hadrosaurs, according to a study released April 17, 2019 in the open-access journal PLOS ONE by Khishigjav Tsogtbataaar of the Mongolian Academy of Science, David Evans of the Royal Ontario Museum, and colleagues.
Oxidants found within living organisms are byproducts of metabolism and are essential to wound-healing and immunity. However, when their concentrations become too high, inflammation and tissue damage can occur. University of Illinois engineers have developed and tested a new drug-delivery system that senses high oxidant levels and responds by administering just the right amount of antioxidant to restore this delicate balance.
Using a powerful X-ray-based technology, Brown University scientists tracked catfish as they caught and swallowed prey to develop a precise understanding of the complex set of motions required to create the suction necessary to eat. They found that many of the bones in the catfish skull work in a coordinated manner to catch food. However, the bones move more independently when the fish swallow.
In a paper recently published in the journal Biological Conservation, an international team of conservationists highlights the importance of tree dens as a choice for pandas raising infants in native habitats. The study, conducted in Fengtongzai Reserve in China, analyzed the difference in microhabitats of cave dens and tree dens used by female pandas. The result of the research suggests that conservation efforts need to take into account species use of microhabitats and habitat features as well as overall ecological systems.
New research from Monterey Bay Aquarium and partner institutions published in Nature Scientific Reports challenges the notion that great white sharks are the most formidable predators in the ocean. The research team documented encounters between white sharks and orcas at Southeast Farallon Island off California. In every case examined by the researchers, white sharks fled the island when orcas arrived and didn't return there until the following season. Elephant seal colonies in the Farallones also indirectly benefited from the interactions.
Why do some animals eat or abandon their offspring? According to researchers at the University of Tennessee and the University of Oxford, these might actually be forms of parental care. Published in Frontiers in Ecology and Evolution, their mathematical model shows that when overcrowding threatens offspring survival -- which often occurs due to spread of infection or competition for resources -- sacrificing a few so the most can live becomes the ultimate form of tough love.