sea eagles, and Scandinavian brown bears regularly feed on these discarded gut piles. Because lead accumulates in bones and soft tissues over decades, repeated ingestion leads to chronic poisoning. Previous studies indicate that sublethal lead exposure...

Archaeologists have discovered 28,000-year-old hearths alongside mammoth remains, revealing new insights into ancient human activity at the prehistoric site. Construction work in northern Bohemia has unexpectedly unearthed a significant archaeological...

Na+ and K+ are important in nerve impulse transmission. Calcium and Phosphorus Calcium and Phosphorus are deposited in bones and teeth to give them strength and rigidity. Ca++ is also essential for blood coagulation, neuromuscular function, cardiac...

urinestaining of diapers) Autosomal recessive Urinary/fecal total porphyrins; ultraviolet fluorescence of urine, feces, and bones Porphyria cutanea tarda* Uroporphyrinogen decarboxylase Skin fragility, bullae Autosomal dominant (some cases)...

the ectoderm and endoderm and extends across the entire blastoderm. It will give rise to various structures such as muscles, bones, and the circulatory system. Blood Islands In the area opaca, the outer region surrounding the area pellucida, groups of...

Spaceflight places unique stresses on the human body. Microgravity alters how fluids move, affects vision, weakens bones and muscles, and changes cardiovascular function. Radiation exposure increases outside Earth’s protective atmosphere, and isolation...

Muddy lakeshore frozen in time yields a rare fossil find—ancient footprints that reveal details bones can’t provide. Footprints preserved in lake‑edge sediments near Lake Turkana, northern Kenya, have provided a rare glimpse into the life of the...

between dinosaurs and other organisms. Credit: Journal of South American Earth Sciences The Challenge of the Missing Bones While the footprints provide compelling evidence of size, the lack of bone fossils remains a major hurdle. Dr. Hermínio Ismael de...

composition of the Hell Creek region at the time. 66-million-year-old dinosaur coprolite reveals preserved bird feathers, bones and a final meal © Jingmai O’Connor/Field Museum Evolving Plumage and Extinction Resilience The preservation of feathers...

retrieved genetic material from stone surfaces in prehistoric caves, extending a technique previously limited to ancient bones, sediments, and portable artifacts. A team from the Max Planck Institute for Evolutionary Anthropology, collaborating with the...

each corner. Their outer shells were composed of calcium phosphate—the same material that constitutes vertebrate teeth and bones—arranged in microscopic, segmented rods. This structural composition accounts for the fossilized herringbone texture. Leo...

Volunteers searching for Revolutionary War artifacts in New Jersey have discovered human remains that had been hidden for nearly 250 years. A routine archaeological survey near the Delaware River has yielded a haunting and unexpected discovery,...

Decades after their discovery, two rare dinosaur bones are shedding new light on a mysterious lineage of giants that once dominated South America. Paleontologists have officially identified a new species of giant dinosaur from fossilized remains...

Show Remarkable Overlap Researchers catalogued an extensive assemblage of 19,252 stone implements alongside 24,236 animal bones, offering a detailed picture of subsistence strategies within the cave. The distribution of these artifacts across both...

early avialans. Despite the shortened series, the vertebrae had not coalesced into a pygostyle. Notably, the final two tail bones are box‑shaped—a trait previously documented only in the distantly related dinosaur Caudipteryx. Holotype of Zhengheornis...

with ceramic lids were discovered inside the chariot’s space. Their contents—organic residues, pottery shards and animal bones—suggest a banquet or food offerings intended to accompany the deceased into the afterlife. 2,500‑year‑old Piceni...

intended to receive guests. At the heart of the site lies a prayer chamber marked by a limestone cross. Excavated animal bones, seashell fragments, and ceramic containers suggest routine communal meals, while a limestone headstone inscribed “Apa Kyr,...

revealed a suite of artifacts—stone implements, pottery shards, ornamental beads, decorated eggshell fragments, animal bones, and charred plant remains—together with hearth residues that attest to domestic activities. Ancient stones, tools, and...

Neanderthal presence within a landscape once dominated by dunes, forests and coastal habitats. Unlike stone tools or animal bones, footprints provide a fleeting snapshot of where people actually walked. These discoveries give scientists a rare window...

and clay packed into the masonry joints to ensure watertight integrity while the feature was in use. The presence of animal bones interred above the human remains, coupled with the absence of typical grave goods like weaponry or personal ornaments,...