Researchers from Tel Aviv University took part in a new international study proposing an amendment to the widely accepted theory on the extinction of animal species - by moving the focus from the animal's body size to its reproductive capacity.
Scientists from the University of Bristol have pioneered a new approach to help biological engineers both harness and design the evolutionary potential of new biosystems. Their concept of the ‘evotype’ lays a foundation for the next generation of stable, safe and self-improving biotechnologies.
Jack Tseng loves bone-crunching animals -- hyenas are his favorite -- so when paleontologist Joseph Peterson discovered fossilized dinosaur bones that had teeth marks from a juvenile Tyrannosaurus rex, Tseng decided to try to replicate the bite marks and measure how hard those kids could actually chomp down.
A large group of iconic fossils widely believed to shed light on the origins of many of Earth’s animals and the communities they lived in may be hiding a secret.
Scientists are the first to model how exceptionally well preserved fossils that record the largest and most intense burst of evolution ever seen could have been moved by mudflows.
The lifestyle of the horned passalus beetle, commonly known as the bessbug or betsy beetle, might seem downright disgusting to the average human: Not only does this shiny black beetle eat its own poop, known as frass, but it uses its feces to line the walls of its living space and to help build protective chambers around its developing young.
A team of evolutionary biologists including faculty at Binghamton University, State University of New York have shown that some Anolis lizards, or anoles, have adapted to rebreathe exhaled air underwater using a bubble clinging to their snouts.
Researchers at the University of Washington have discovered the first fossil evidence of an ancient amphibian, Micropholis stowi, from Antarctica. Micropholis lived in the Early Triassic, shortly after Earth's largest mass extinction. It was previously known only from fossils in South Africa.
Study offers significant new information on the correlations between oxygenation of the early Earth and the rise of large multicellular organisms. “We show that the effect of oxygen is more complex than previously imagined," said Will Ratcliff with Georgia Tech's School of Biological Sciences.
Scientists examining the remains of 36 bubonic plague victims from a 16th century mass grave in Germany have found the first evidence that evolutionary adaptive processes, driven by the disease, may have conferred immunity on later generations of people from the region.
The origins of a pretty smile have long been sought in the fearsome jaws of living sharks which have been considered living fossils reflecting the ancestral condition for vertebrate tooth development and inference of its evolution. However, this view ignores real fossils which more accurately reflect the nature of ancient ancestors.
Researchers at the University of New Hampshire found that to live in hotter more desert-like surroundings, and exist without water, there is more than one genetic mechanism allowing animals to adapt. This is important not only for their survival but may also provide important biomedical groundwork to develop gene therapies to treat human dehydration related illnesses, like kidney disease.
A giant saber-toothed cat lived in North America between 5 million and 9 million years ago, weighing up to 900 pounds and hunting prey that likely weighed 1,000 to 2,000 pounds, scientists reported today in a new study.
Scientists from Stony Brook University and the Max Planck Institute of Animal Behavior have pieced together a timeline of how brain and body size evolved in mammals over the last 150 million years. The findings will be published in Science Advances.
What makes the human brain special? It’s not the time it takes to mature, according to new research. Scientists report the human frontal cortex, the part of the brain involved in higher-level thinking and reasoning, follows a developmental trajectory similar to that of other primates including chimpanzees and macaques.
The two major types of cetaceans appear to have evolved their characteristic blowholes through different anatomical transformations, according to a study being presented at the American Association for Anatomy annual meeting during the Experimental Biology (EB) 2021 meeting, held virtually April 27-30.
Tyrannosaurus rex dinosaurs chomped through bone by keeping a joint in their lower jaw steady like an alligator, rather than flexible like a snake, according to a study being presented at the American Association for Anatomy annual meeting during the Experimental Biology (EB) 2021 meeting, held virtually April 27-30.
Embargoed press materials are now available for the virtual Experimental Biology (EB) 2021 meeting, featuring cutting-edge multidisciplinary research from across the life sciences. EB 2021, to be held April 27–30, is the annual meeting of five scientific societies bringing together thousands of scientists and 25 guest societies in one interdisciplinary community.
Quantifying the relative importance of natural selection, migration, and random shifts to a species is a major challenge in ecology research, especially for microbes. This study develops an approach named iCAMP that is based on the concept that different processes can govern different groups of species in a diverse community. Applied to grassland microbial communities, iCAMP revealed that environmental changes altered the relative importance of the ecological processes.
How did the first humans migrate to populate North America? It's one of the great scientific puzzles of our day, especially because forbidding glaciers covered most of Canada, Alaska and Pacific Northwest during the Last Glacial Maximum (LGM).
Humans have a uniquely high density of sweat glands embedded in their skin—10 times the density of chimpanzees and macaques. Now, researchers at Penn Medicine have discovered how this distinctive, hyper-cooling trait evolved in the human genome.
In a new article published in Nature Communications, Moffitt Cancer Center researchers show how the location of the tumor and spatial constraints put on it by the surrounding tissue architecture impact genetic heterogeneity of tumors.
Researchers with the Wildlife Conservation Society’s (WCS) Congo Program and the Nouabalé-Ndoki Foundation found that female putty-nosed monkeys (Cercopithecus nictitans) use males as “hired guns” to defend from predators such as leopards.
The pelvis is the part of the human skeleton with the largest differences between females and males. The female birth canal is on average more spacious and exhibits shape features that enable birth of a large baby with a big brain. In forensics, these pelvic differences are used for sex identification of human skeletons. Thus far it was unclear when these pelvic differences first appeared in human evolution. Barbara Fischer from the University of Vienna and her coauthors have published a study in Nature Ecology & Evolution presenting new insights into the evolutionary origin of pelvic sex differences.
An international group of researchers led by the University of Adelaide has conducted a comprehensive genetic analysis and found no evidence of interbreeding between modern humans and the ancient humans known from fossil records in Island Southeast Asia. They did find further DNA evidence of our mysterious ancient cousins, the Denisovans, which could mean there are major discoveries to come in the region.
Cornell researchers discovered that male huntsman spiders, who travel long distances to find mates, have small bodies relative to their long legs, while the females, who secure and defend their nests and don’t stray far from it, have bigger abdomens compared to their leg lengths.