Results 61 to 70 of about 223,187 (208)

Humans are not unique: difficult birth is common in placental mammals

Biological Reviews, Volume 101, Issue 5, Page 2214-2239, October 2026.
ABSTRACT Human childbirth is widely presumed to be uniquely difficult and dangerous compared to birth in other mammals. Tight fetopelvic proportions can result in obstructed labour and contribute to high rates of maternal and neonatal mortality. Ideas summarised under the ‘obstetrical dilemma’ have contributed to this assumption by explaining difficult
Nicole D. S. Grunstra
wiley   +1 more source

Mitochondrial genomes reveal an explosive radiation of extinct and extant bears near the Miocene-Pliocene boundary

BMC Evolutionary Biology, 2008
Background Despite being one of the most studied families within the Carnivora, the phylogenetic relationships among the members of the bear family (Ursidae) have long remained unclear.
Rabeder Gernot, O'Brien Stephen J, Bray Sarah CE, Briggs Adrian W, Dear Paul H, Spriggs Helen, Soibelzon Leopoldo, Stiller Mathias, Kolokotronis Sergios-Orestis, Malaspinas Anna-Sapfo, Noçon Aline, Unger Tina, Krause Johannes, Matheus Paul, Cooper Alan, Slatkin Montgomery, Pääbo Svante, Hofreiter Michael   +17 more
doaj   +1 more source

Severe conservation risks of roads on apex predators

Scientific Reports, 2022
The global expansion of road networks threatens apex predator conservation and ecosystem functioning. This occurs through wildlife-vehicle collisions, habitat loss and fragmentation, reduced genetic connectivity and increased poaching.
Itxaso Quintana, Edgar F. Cifuentes, Jeffrey A. Dunnink, María Ariza, Daniela Martínez-Medina, Felipe M. Fantacini, Bibek R. Shrestha, Freddie-Jeanne Richard   +7 more
doaj   +1 more source

From Critical Thinking to d‐Critical Thinking: Reconstructing Dewey's Sense of Critical in How We Think

Educational Theory, Volume 76, Issue 5, Page 597-617, October 2026.
Abstract In this article, I reexamine John Dewey's original sense of critical in How We Think (first published in 1910), arguing that contemporary discourse about critical thinking reveals a process of lexicalization through which the term critical has lost its meaning. This article finds that Dewey's original sense of critical (which I term d‐Critical)
Matthew Landers
wiley   +1 more source

Hoffmann's two‐toed sloth I: Complete myology in the thoracic limb of Choloepus (Pilosa: Xenarthra)

Journal of Anatomy, Volume 249, Issue 4, Page 714-736, October 2026.
Two‐toed sloths use their thoracic limbs for more frequent and prolonged suspensory support than three‐toed sloths and accordingly demonstrate myological traits consistent with stability of the pectoral girdle, enhanced flexor force/torque applied at the elbow joint, and grip on the support.
C. S. Tucker, A. M. Mossor, J. A. Avey‐Arroyo, M. T. Butcher   +3 more
wiley   +1 more source

Human Pressure Structures Range Contraction and Recovery Potential of the Snow Leopard

Ecology and Evolution, Volume 16, Issue 9, September 2026.
We developed a spatially explicit framework to quantify how human pressure influences range dynamics in the snow leopard. Our results reveal a consistent spatial filtering effect, where human footprint shapes patterns of contraction, persistence, and recovery potential.
Erik Joaquín Torres‐Romero, Vincenzo Penteriani, William J. Ripple, James R. Allan, Adrian Treves, Kendall R. Jones, Rodney Jackson   +6 more
wiley   +1 more source

Ursodeoxycholic acid in the Ursidae: biliary bile acids of bears, pandas, and related carnivores.

Journal of Lipid Research, 1993
The biliary bile acid composition of gallbladder bile obtained from six species of bears (Ursidae), the Giant panda, the Red panda, and 11 related carnivores were determined by reversed phase liquid chromatography and gas chromatography-mass spectrometry.
LR Hagey, DL Crombie, E Espinosa, MC Carey, H Igimi, AF Hofmann   +5 more
doaj   +1 more source

Climate, land, and bears: Exploring habitat suitability of Asian bears under environmental changes

Environmental and Sustainability Indicators
We aimed to assess the impacts of climate and land-use alterations on the Asian habitats of four bear species black bear, brown bear, sloth bear, and sun bear using ensemble framework.
Amar Paul Singh, Lalit Kumar Sharma, Vineet Kumar, Amira Sharief, Hemant Singh, Shahid Ahmad Dar, Saurav Bhattacharjee, Bheem Dutt Joshi, Mukesh Thakur   +8 more
doaj   +1 more source

First record of leucistic Sloth Bear Melursus ursinus Shaw, 1791 (Mammalia: Carnivora: Ursidae) in Panna Tiger Reserve, India

Journal of Threatened Taxa
The first photographic evidence of a leucistic Sloth Bear from Panna Tiger Reserve, Madhya Pradesh, was obtained during a camera trapping survey conducted during 2019–2021.
Sankarshan Chaudhuri, Supratim Dutta, K. Ramesh   +2 more
doaj   +1 more source

The Rhythmic and the Metronomic: On Charlie Chaplin's Gait

Critical Quarterly, EarlyView.
Matthew Beaumont
wiley   +1 more source