The Norellraptor barsboldi fossil shows traces of feathers on its fore and hind limbs as well as at the end of its tail. Credit: Xuri Wang et al./Nat. Commun. The discovery of a species of feathered dinosaur in China, through a stunningly well-preserved fossil, adds to a growing body of evidence that birds and their
MPRA design Library design To generate the catalogue of fixed human-derived substitutions we used genotyping data from 139 non-human great apes15,68,69,70,71 (10 bonobos, 59 chimpanzees, 43 gorillas and 27 orangutans), all mapped to the human reference genome GRCh37. To restrict the analysis to high-confidence genotypes, we excluded variants that did not meet any of the
Patient recruitment and sample collection Specimens were obtained from 20 patients, including histopathologically normal tissue (n = 20, flash-frozen tissue), primary tumour samples (n = 24; 16 FFPE and 8 flash-frozen tissue) and 1–7 metastases per patient (n = 80, flash-frozen tissue). Details of tissue source, location, histology, among other information, for each sample are provided in Supplementary Table 1. Autopsy
Over two days in June, Emily Aguilar-Pine drove 2,500 kilometres from Bozeman, Montana, to Austin, Texas, with one of microbiology’s most coveted organisms in the back of her mother’s SUV. Inside some protective packaging, labelled ‘hopes and dreams’, was a small bottle containing about 30 millilitres of what looked like clear liquid, but that in
One hundred years ago, on 23 September 1926, zoologist Paul Kammerer shot himself on Hochschneeberg, a mountain plateau southwest of Vienna. He was discovered slumped against a rock by a retired railway worker who had followed the barking of the dogs Kammerer had taken with him on his final walk. Shock at the zoologist’s death
Time’s Second Arrow: Evolution, Order, and a New Law of Nature Robert M. Hazen and Michael L. Wong W. W. Norton (2026) Like evolution by natural selection, some ideas that start out as revolutionary can become so intuitive that they seem banal to future generations. Mineralogist Robert Hazen and planetary scientist Michael Wong must hope
