Showing 20 articles starting at article 1221

< Previous 20 articles        Next 20 articles >

Categories: Biology: Biochemistry, Paleontology: Fossils

Return to the site home page

     (via sciencedaily.com)     Original source 

Consuming over 22% of dietary calories from protein can lead to increased activation of immune cells that play a role in atherosclerotic plaque formation and drive the disease risk, new study showed.

     (via sciencedaily.com)     Original source 

Imageomics, a new field of science, has made stunning progress in the past year and is on the verge of major discoveries about life on Earth, according to one of the founders of the discipline.

     (via sciencedaily.com)     Original source 

Armed with a catalog of hundreds of thousands of DNA and RNA virus species in the world's oceans, scientists are now zeroing in on the viruses most likely to combat climate change by helping trap carbon dioxide in seawater or, using similar techniques, different viruses that may prevent methane's escape from thawing Arctic soil.

     (via sciencedaily.com)     Original source 

Until recently, Orthacanthus gracilis could have been considered the 'John Smith' of prehistoric shark names, given how common it was. Three different species of sharks from the late Paleozoic Era -- about 310 million years ago -- were mistakenly given that same name, causing lots of grief to paleontologists who studied and wrote about the sharks through the years and had trouble keeping them apart. But now a professor has finished the arduous task of renaming two of the three sharks -- and in the process rediscovered a wealth of fossil fishes that had been stored at a museum for years but had been largely forgotten.

     (via sciencedaily.com)     Original source 

Researchers have identified a new pathway that contributes to cardiovascular disease associated with high levels of niacin, a common B vitamin previously recommended to lower cholesterol. The team discovered a link between 4PY, a breakdown product from excess niacin, and heart disease. Higher circulating levels of 4PY were strongly associated with development of heart attack, stroke and other adverse cardiac events in large-scale clinical studies. The researchers also showed in preclinical studies that 4PY directly triggers vascular inflammation which damages blood vessels and can lead to atherosclerosis over time.

     (via sciencedaily.com)     Original source 

Instead of carrying the babies until they hatched, as in most species of sea spiders, one parent (likely the father) spent two days attaching the eggs to the rocky bottom where they developed for several months before hatching as tiny larvae.

     (via sciencedaily.com)     Original source 

Palaeontological analysis shows that a renowned fossil thought to show soft tissue preservation is in fact just paint. The fossil discovered in 1931 was thought to be an important specimen for understanding early reptile evolution. While not all of the celebrated fossil is a forgery, scientists urge caution in how the fossil is utilized in future.

     (via sciencedaily.com)     Original source 

Researchers studied the composition and function of bacteria in the seabed off Svalbard, during alternating periods of polar night and midnight sun. To do this, they specially developed a sampling device, the Ellrott grab. In contrast with bacterial communities in the overlying water, the sediment bacteria hardly change with the seasons. This is probably due to the fact that in the seabed some hard-to-digest foods are available all year round.

     (via sciencedaily.com)     Original source 

Researchers have identified a protein that evolved concurrently with the emergence of cellular compartments crucial for the multiplication of the toxoplasmosis pathogen.

     (via sciencedaily.com)     Original source 

Researchers propose a framework for integrating online digital data into biodiversity monitoring.

     (via sciencedaily.com)     Original source 

Researchers have found genes in the reproductive organs of bulls that influence fertility. The findings can be transferred to humans, as these genes are also present in men.

     (via sciencedaily.com)     Original source 

New research has shown that the tropical subsurface ocean gained oxygen during the Paleocene-Eocene Thermal Maximum (commonly referred to as PETM). During this short-lived interval of time in Earth s history that occurred 56 million years ago the average temperatures rose by up to six degrees within a few thousand years.

     (via sciencedaily.com)     Original source 

A new antibiotic overcomes antimicrobial resistance mechanisms that have rendered many modern drugs ineffective and are driving a global public health crisis.

     (via sciencedaily.com)     Original source 

A new model bridges the rules of life at the individual scale and the ecosystem level, which could open new avenues of exploration in ecology, global change biology, and ultimately ecosystem management.

     (via sciencedaily.com)     Original source 

Scientists may have figured out why some people have trouble digesting sorbitol, a sugar alcohol used in sugar-free gum, mints, candy and other products.

     (via sciencedaily.com)     Original source 

Researchers have completed one of the most extensive river resilience studies, examining how river ecosystems recover following floods. They developed a novel modeling approach that used data from oxygen sensors placed in rivers to estimate daily growth in aquatic plants and algae. The researchers then modeled the algal and plant biomass in 143 rivers across the contiguous U.S. to quantify what magnitude of flooding disturbs the biomass and how long the rivers take to recover from floods. Increased understanding of rivers' resiliency is important to maintaining healthy rivers, as human actions can affect flood regimes and change the conditions in rivers for other aquatic life that may rely on algae and plants as a food source.

     (via sciencedaily.com)     Original source 

Researchers found that the oral bacterium Streptococcus gordonii activates another bacterial species, Fusobacterium nucleatum, to produce large quantities of methyl mercaptan, a compound responsible for bad breath. Disrupting this interaction could therefore help treat halitosis, and possibly also help prevent the development of more serious tooth and gum disease.

     (via sciencedaily.com)     Original source 

Scientists take innovation in coral e-DNA monitoring to the next level.

     (via sciencedaily.com)     Original source 

When the female gametes in plants become fertilized, a signal from the sperm activates cell division, leading to the formation of new plant seeds. This activation can also be deliberately triggered without fertilization, as researchers have shown. Their findings open up new avenues for the asexual propagation of crop plants.

     (via sciencedaily.com)     Original source 

A new study has explored the link between diet and cognitive function, and the results reveal that a protein-rich breakfast can increase satiety and improve concentration. This is important knowledge in a society with increasing obesity rates and lifestyle-related diseases.