G-quadruplexes reveal molecular links between telomeres and telomerase: critical findings for neoplastic transformation, aging and regenerative therapy

Normal cells age and eventually die when they have reached their maximum useful life. In these cells, telomeres, the end of a chromosome, cannot be synthesized due to the suppression of the inverse transcriptase enzyme of human telomerase (HTERT), resulting in the shortening of telomeres. Although the link is not clear yet, many studies showed…

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Taxonomic notes on the genus Yunohamella Yoshida, 2007 (Araneae, Theridiidae) of China, with two new species

Four Yunohamella The species are reported from the province of Hubei, China, including two new species: AND. Gutenbergi R. Zhong, J. Liu and Hu, sp. nov. (♂) and AND. Mohorovicici R. Zhong, J. Liu and Hu, sp. nov. (♂). Yunohamella Jiugongensis (Liu and Zhong, 2023), comb. nov. It is transferred from the genre Cryptochaea Archer,…

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Fossil of 149 million years pushes the origins of birds to the Jurassic period

A recent fossil finding fills a breach of obvious prehistoric birds. The Jurassic period affirms Archeptérix (Sometimes called Dinosaur Adeinonychosaurian), which, despite its feathered wings, seem more dinosaurs. Meanwhile, most Avian parents of the Cretaceous seem more similar to birds, with short tails that end in a compound bone called Pigostilo. A team from the…

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The mysterious cosmic lights turn out to be 2 remains of Supernova without discovering

When the scientists pointed to the X-ray Observatory of the European Space Agency, XMM-Newton, with two mysterious lights on the outskirts of the great Magellanic cloud, they discovered an unexpected source: two previously unknown supernova remains. “When a star dies, it can explode in a supernova, causing a strong shock wave and forming an interstellar…

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Twenty years of blogs in retrospective

20 years have passed since we started blogging on climate here in Realclimate (December 10, 2004). We wanted to counteract misinformation about climate change that was extending through several campaigns. In those days it was an unusual movement that caused A welcome from Nature. One thing that I did not anticipate then was the vast…

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