Conflict has existed throughout human history, and it has often been violent. Attacks, assassinations, raids, ambushes, and vendettas feature in archaeological records almost as far back as the origin of humankind itself. ...
Archaeology
Jan 11, 2024
0
18
The evolution of animal heads is a remarkable example of how various anatomical features co-evolved to adapt to different ecological niches, behaviors and functions. But the intricate details of why vertebrate head shapes ...
Plants & Animals
Jan 10, 2024
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51
A team of biologists, historians, and Earth and environmental scientists affiliated with multiple institutions in the U.S. has found evidence that contradicts historical accounts of the size and feeding habits of the now-extinct ...
Bile ducts are pathways that carry hepatocyte-produced bile from the liver to the small intestine. In the human fetal liver, bile ducts are formed from bile duct epithelial cells surrounding the portal vein, and hepatocytes ...
Cell & Microbiology
Jan 9, 2024
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1
Scientists have solved a cellular murder mystery nearly 25 years after the case went cold. Following a trail of evidence from fruit flies to mice to humans revealed that cannibalistic cells likely cause a rare human immunodeficiency. ...
Cell & Microbiology
Jan 7, 2024
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98
The first person to spot it was a shovel operator working the overnight shift, eyeing a glint of white as he scooped up a giant mound of dirt and dropped it into a dump truck.
Paleontology & Fossils
Jan 7, 2024
0
120
Credit for discovering the first dinosaur bones usually goes to British gentlemen for their finds between the 17th and 19th centuries in England. Robert Plot, an English natural history scholar, was the first of these to ...
Paleontology & Fossils
Jan 4, 2024
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163
A new analysis of fossils believed to be juveniles of T. rex now shows they were adults of a small tyrannosaur, with narrower jaws, longer legs, and bigger arms than T. rex. The species, Nanotyrannus lancensis, was first ...
Evolution
Jan 2, 2024
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1165
Bacillus anthracis lethal toxin (LT) is a determinant of lethal anthrax. Its function in myeloid cells is required for bacterial dissemination, and LT itself can directly trigger dysfunction of the cardiovascular system. ...
Cell & Microbiology
Dec 27, 2023
0
8
A microbial sensor that helps identify and fight bacterial infections also plays a key role in the development of blood stem cells, providing a valuable new insight in the effort to create patient-derived blood stem cells ...
Cell & Microbiology
Dec 19, 2023
0
96
