Biology

Chromosomal Study Proposes People Were Residing in South America as far Back as 18,000 Years Ago

Schematic representation of the geographic distribution of Q-Z780 and sub-lineages. Colored circles represent geographic distribution and sub-lineage membership as shown in the inset tree. Credit: PLOS ONE (2022).Discovery of chromosomal evidenceA team of scientists affiliated with many institutions in Argentina has discovered chromosomal proof of people residing in South America as far back as 18,000...

Genetic Changes Connected to Surface Area Explain Why Modern Humans Developed Bigger Brains

Credit: Annelisa LeinbachAn increase in genetic regulatory aspects explains how modern humans evolved bigger brains than other hominins.The surface area of the human being's cerebral cortex is more than 3 times the dimension of that of the chimpanzee. Neuroscientists have found that particular gene variants are linked to increases in brain surface area. The...

Satellite Telemetry Data Reveals Narwhals Modifying Seasonal Migration Patterns in Response to Climate Modification

A narwhal swims amid ice during spring migration. Leaving the coast later each year may leave narwhals more vulnerable to getting trapped in sea ice that stops them surfacing. Credit: ReutersA group of investigators affiliated with many institutions in Canada as well as Denmark has discovered proof that narwhals have been changing their seasonal migration...

Researchers Uncover Evidence of What May Be Earth’s First Mass Animal Extinction

Aaron Foster/Getty ImagesEver since the Cambrian blast 538.8 million years earlier-- a time when most of the animal phyla we're familiar with today were established-- 5 significant mass extinction events have whittled down the biodiversity of all creatures, great and tiny.Researchers from the United States have uncovered proof of one happening earlier, around 550...

A Memory Prosthesis Can Restore Memory in Individuals with Damaged Brains

Wake forest medical centerBrain electrodes developed to mimic the hippocampus appear to increase the encoding of memories-- and are two times as effective in people with bad memory.A singular form of brain stimulation seems to boost people's capability to remember new details-- by imitating how our brains create memories.Memory prosthesisThe "memory prosthesis," which includes...

Study Reveals How Naturally-Occurring Coumpound Eliminates Significant Drug-Resistant Bacteria

Credit: CC0 Public DomainResearchers examining the effects of an organic compound on drug resistance bacteria have found how it could impede and exterminate a germ that causes extreme sickness or sometimes fatalities.Pseudomonas aeruginosaPseudomonas aeruginosa is a kind of microorganism usually discovered in patients, which can cause infections in the blood, lungs (pneumonia), or...

The Function of Nutrient Might Reveal in Fight Against Microbial Infections

Helicobacter pylori medical illustrationA nutrient that is prevalent in the human diet has been discovered to aid the survival of a cancer-causing microorganism, a recent Yale research discovers. The findings could disclose an essential target for new drugs to tackle numerous contagious diseases in human beings.The nutrient, called ergothioneine, or EGT, an identified antioxidant,...

Overfished Lobster Found to Grow Bigger in Protected Areas

A group of investigators at the College of Agder's, Center for Coastal Study, functioning with an associate at the Institute of Marine Research, both in Norway, has discovered that when secured places for lobsters are developed in overfished parts of the ocean, the lobsters tend to grow greater. In their paper released in Proceedings...

Scientists Discover Breast Cancer Protein that Could Anticipate Chemotherapy Sensitivity

Three-dimensional culture of human breast cancer cells, with DNA stained blue and a protein in the cell surface membrane stained green. Credit: NCI Center for Cancer Research, National Cancer Institute, National Institutes of HealthScientists have determined a protein that, when present in significant quantities in breast cancer tumors, is a signal of whether DNA-damaging...

New Research Discovers Links Between Genetic Factors in Autism Spectrum Disorder (ASD)

Credit: Unsplash/CC0 Public DomainIn a recent research released today in Cell Reports, scientists from the Donald K. Johnson Eye Institute (DKJEI), part of the Krembil Research Institute at University Health Network, have determined anteriorly unknown links between genetic factors in autism spectrum disorder (ASD).This neurodevelopmental disorder  is associated with a wide variety of physiological...