Articles tagged with Caves
Researchers found genetic markers for albinism in two cave-dwelling fish populations appeared in the same location, suggesting a common mutation. The Oca2 gene was identified as responsible for pigmentation and the deletion of a specific exon produced albinism.
Researchers found that cave crickets in Texas forage up to 80 meters from their caves, double the previously reported range. This discovery highlights the need to extend protective buffer areas around caves to safeguard endangered invertebrate species.
Researchers have discovered the closest living descendant of the extinct giant deer, a species that once roamed the UK. The fallow deer was found to share key characteristics with the ancient animal, including flattened antlers and similar skull and teeth features.
DOE JGI scientists have overcome major challenges to sequence DNA from ancient cave bear specimens, yielding 40,000-year-old genomic data. The breakthrough enables comparison with modern brown bears and polar bears, shedding light on human predecessors.
Scientists from Bristol, The Open and Sheffield Universities have dated the engravings at Creswell Crags to over 12,800 years old, making them Britain's oldest rock art. The dating method used uranium-series dating, which measures minute traces of radioactive uranium in thin limestone crusts that formed over the engravings.
Researchers found well-preserved cedar timbers, curved steering oars, and limestone block-anchors from ancient Egyptian ships. The discoveries shed new light on Egypt's sea-faring past and provide insight into trade expeditions to the Red Sea region known as Punt.
Researchers at the Hebrew University of Jerusalem and Geological Survey of Israel developed a new method to date ancient earthquakes using cave evidence. They found evidence of earthquakes with magnitudes of 7.5 or greater occurring in the region over the last 200,000 years, but not in recent times.
Researchers at Washington University in St. Louis have successfully sequenced a fossil human protein from over 40,000 years ago, providing valuable information on human evolution and diet. The analysis reveals that the Neanderthal sequence is identical to modern humans', suggesting a shared dietary history.
Researchers developed a mathematical theory that describes the universal shape of stalactites, found in caves worldwide. The theory, based on fluid dynamics and geometry, reveals an ideal form underlying all stalactite shapes, with actual formations differing by less than 5%.
A new study suggests that global warming will lead to a dramatic decline in reindeer populations, with their numbers dwindling dramatically as they move further north. The research, published in Conservation Biology, analyzed the fossil record of reindeer found in southwestern France and correlated it with summer climate data.
Duke University researchers studied tree roots in place, finding they adjust anatomy and physiology to maximize water transport deep underground. The findings improve theoretical models of water transport within trees, revealing the importance of deep roots in efficient water flow.
Archaeologists discovered perforated shells at Blombos Cave, dated to 75,000 years ago, which were likely strung as beads. This finding supports the theory that modern human behavior developed gradually throughout the Middle Stone Age.
A team of archaeologists from Boston University has uncovered the story of life among rural Maya in Belize's Sibun River Valley during the Late Classic Period. The research reveals a community that practiced sustainable agriculture and maintained dense vegetation to support their trade product: cacao.
Archaeologists at Newcastle University and Australian National University estimate rock paintings in the uKhahlamba-Drakensberg are up to 3,000 years old. This new study uses accelerator mass spectrometry radiocarbon dating to contribute significantly to understanding San hunter-gatherer society.
A study of ancient vole fossils has provided a unique view on the evolution and adaptation of species to climate change. The findings suggest that small mammals can adapt to routine climate change, but significant evolutionary changes are only triggered by extraordinary events.
A study of fossil records at Grotte XVI found that Neanderthals and Cro-Magnon both hunted a wide variety of game, including reindeer and red deer. The researchers also discovered a sharp drop in cave bear numbers from Neanderthal to Cro-Magnon times, suggesting competition for living space may have led to their extinction.
The discovery sheds light on early modern human biology and their archaic origins. The fossils, dating back 34,000-36,000 years, reveal a mix of modern and archaic characteristics.
Researchers from USDA Forest Service and Tennessee Technological University provide the first descriptions of Indiana bat maternity habitats in the southeastern United States. The study reveals that female bats form colonies under coniferous trees, expanding the known habitat range of the endangered species.
The Surf Zone Crawler, a fully autonomous amphibious vehicle, can follow search instruction plans, classify and map underwater mines in turbulent ocean surf zones. It has been used to search under the World Trade Center after 9/11, Afghan caves, and underwater wreckage off Normandy's beaches, with plans to deploy it in Iraq.
Climate change is altering marine ecosystems in the Northwest Mediterranean. A study found that warmer temperatures are replacing cold-loving species with those better adapted to warmer conditions. This shift highlights the significant threat global warming poses to Mediterranean biodiversity.
SpeechGear's Compadre language translation technology offers simultaneous two-way translation of spoken language, generating written records and handling nuances of language translation. The system connects to a remote server for massive computing power, enabling seamless verbal communication with individuals speaking different languages.
Researchers have discovered a correlation between El Niño events and stalagmite growth in Belize, revealing changes in the carbon cycle of the overlying rainforest ecosystem. The findings suggest that stalagmites may record important information about weather and carbon fluxes on interannual time scales.
Virginia Tech and ICSRC used Internet2 technology to create a live virtual classroom environment where students from Seattle interacted with teachers on the east and west coast. The ThinkQuest conference explored emerging technologies and educational ideas, with participants debating future possibilities for K-12 audiences.
Researchers isolated bacteria from Mammoth Cave that produce a substance inhibiting angiogenesis, a process crucial for cancer cell growth. The discovery offers new potential tools in the fight against cancer.
Researchers found a shift in diet and personal ornamentation, such as beads, around 40-50 thousand years ago, which may indicate increased human population density. This change occurred simultaneously in Africa, Asia, and Europe, suggesting that modern humans did not expand from a single geographic location.
Researchers have discovered abstract representations of ochre pieces in a South African cave, dating back to at least 70,000 years ago. The findings indicate that early humans were able to think abstractly and behave as modern humans earlier than previously thought.
Researchers found nearly 1,000 cave species in the continental US, with over 60% living in a single county or cave. Protecting land above caves is crucial to save these species from disruptions to vegetation and drainage basins.
A study published in the Journal of Biogeography analyzed over 184,000 mammal bones and teeth from Homestead Cave in Utah, revealing how climate change affected small mammal populations. The findings suggest that arid-loving kangaroo rats thrived during warmer conditions, while others became extinct or disappeared.
Scientists have discovered hundreds of migratory bird bones in the Bluefish Caves, indicating a diverse avian fauna. The findings contradict earlier ideas that the region was a marginal habitat, suggesting an environmental richness supporting multiple feeding niches.
A psychologist proposes that cave artists, who painted sophisticated images 31,000 years ago, were actually people with underdeveloped minds. An autistic girl's unusual drawing skills inspired this theory, which suggests that artistic talents emerged due to mental deficiencies rather than sophistication.
Researchers uncover evidence of complex behaviors, symbolic thinking, and problem-solving among early humans in southern China. Large mammal remains show signs of human intervention, such as burning and cutting marks, suggesting a deliberate process of collection and use.
Diane Waddle and her team discover a vast collection of fossils, including those of tiny bats, shrews, birds, frogs, adult and juvenile primates, in the Bone Cave in Botswana. The find is significant as it helps fill the gap in the fossil record of Botswana.
A recent study by Drs. Kaufman, Bar-Matthews, and Ayalon analyzed stalactite samples to reconstruct ancient climatic changes. The research found that the region experienced dry and cool conditions from 20,000 to 58,000 years ago, with significant rainfall fluctuations occurring after 6,000 years ago.
Researchers have found a way to identify ancient ash using chemical transformations, providing new insights into prehistoric lifestyles. The discovery could help explain how early humans used fire for cooking, warmth, and protection.
A team of University of Cincinnati biologists has discovered a unique ecosystem in Romania's Movile Cave that thrives without solar energy. The cave is home to 48 species, including 33 found nowhere else, which rely on chemoautotrophic processes for food production.