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Origin of Life [PDF]

The American Biology Teacher, 2021
The question of the origin of life was probably asked as soon as humans developed self-consciousness. Our ancestors realized very early that plants, animals, and humans, are distinct from non-living entities on Earth such as rocks, water, and air. Where did life come from?
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Ancient Mitogenomes Reveal the Origins and Genetic Structure of the Neolithic Shimao Population in Northern China

Frontiers in Genetics, 2022
Shimao City is considered an important political and religious center during the Late Neolithic Longshan period of the Middle Yellow River basin. The genetic history and population dynamics among the Shimao and other ancient populations, especially the ...
Jiayang Xue, Jiayang Xue, Wenjun Wang, Wenjun Wang, Jing Shao, Xiangming Dai, Zhouyong Sun, Jacob D. Gardner, Liang Chen, Xiaoning Guo, Nan Di, Xuesong Pei, Xiaohong Wu, Ganyu Zhang, Can Cui, Can Cui, Peng Cao, Feng Liu, Qingyan Dai, Xiaotian Feng, Ruowei Yang, Wanjing Ping, Wanjing Ping, Lizhao Zhang, Nu He, Qiaomei Fu, Qiaomei Fu, Qiaomei Fu   +27 more
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SEM Analyses of Fossilized Chondrocytes in the Extinct Birds Yanornis and Confuciusornis: Insights on Taphonomy and Modes of Preservation in the Jehol Biota

Frontiers in Earth Science, 2021
Calcified cartilage is a vertebrate tissue that has unique characteristics, such as a high percentage of calcification, avascularity and cells with apparently delayed autolytic processes after death. All of these factors suggest that fossilized cartilage
Alida M. Bailleul, Alida M. Bailleul, Zhonghe Zhou, Zhonghe Zhou   +3 more
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Association between cord blood metabolites in tryptophan pathway and childhood risk of autism spectrum disorder and attention-deficit hyperactivity disorder

Translational Psychiatry, 2022
Alterations in tryptophan and serotonin have been implicated in various mental disorders; but studies are limited on child neurodevelopmental disabilities such as autism spectrum disorder (ASD) and attention-deficit hyperactivity disorder (ADHD).
Ramkripa Raghavan, Neha S. Anand, Guoying Wang, Xiumei Hong, Colleen Pearson, Barry Zuckerman, Hehuang Xie, Xiaobin Wang   +7 more
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Investigating Possible Gastroliths in a Referred Specimen of Bohaiornis guoi (Aves: Enantiornithes)

Frontiers in Earth Science, 2021
Gastroliths, where preserved, can provide indirect evidence regarding diet in extinct avian and non-avian dinosaurs. Masses of gastroliths consistent with the presence of a gastric mill are preserved in many Early Cretaceous Jehol birds mostly belonging ...
Shumin Liu, Shumin Liu, Zhiheng Li, Zhiheng Li, Alida M. Bailleul, Alida M. Bailleul, Min Wang, Min Wang, Jingmai O’Connor, Jingmai O’Connor, Jingmai O’Connor   +10 more
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The Bootstrap Model of Prebiotic Networks of Proteins and Nucleic Acids

Life, 2022
It is not known how life arose from prebiotic physical chemistry. How did fruitful cell-like associations emerge from the two polymer types—informational (nucleic acids, xNAs = DNA or RNA) and functional (proteins)?
Thomas Farquharson, Luca Agozzino, Ken Dill   +2 more
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Osteohistology of the Scapulocoracoid of Confuciusornis and Preliminary Analysis of the Shoulder Joint in Aves

Frontiers in Earth Science, 2021
As key components of the tetrapod pectoral girdle, the scapula and coracoid have played a significant role in the evolution of forelimb locomotion among terrestrial vertebrates.
Qian Wu, Qian Wu, Qian Wu, Alida M. Bailleul, Alida M. Bailleul, Zhiheng Li, Zhiheng Li, Jingmai O’Connor, Jingmai O’Connor, Jingmai O’Connor, Zhonghe Zhou, Zhonghe Zhou   +11 more
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James J. Kaput (1942–2005) imagineer and futurologist of mathematics education [PDF]

, 2008
Jim Kaput lived a full life in mathematics education and we have many reasons to be grateful to him, not only for his vision of the use of technology in mathematics, but also for his fundamental humanity.
D. O. Tall, D. O. Tall, David Tall, E. M. Gray, I. N. Stewart, J. E. Sims-Knight, J. Fleming, J. J. Kaput, J. J. Kaput, J. J. Kaput, J. J. Kaput   +10 more
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Spatial Information in the Emergence of Life

Frontiers in Genetics, 2021
Information in living systems is part of a complex relationship between the internal organization and functionality of life. In a cell, both genetic-coding sequences and molecular-shape recognition are sources of biological information.
Hugo I. Cruz-Rosas, Pedro Miramontes
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Benjamin Franklin and the leather-apron men: the politics of class in eighteenth-century Philadelphia [PDF]

, 2009
Benjamin Franklin's autobiography reveals his deep investment in shaping and controlling how both his contemporaries and posterity assessed his life and achievements.
Crowther, SIMON P. NEWMAN
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