#Evolution

🦕 Scientists have discovered preserved collagen in a dinosaur bone that is 66 million years old! This discovery, published in the journal Analytical Chemistry, calls into question the theory of the complete disappearance of organic matter during fossilization. 🔬 The amino acid hydroxyproline was found in an Edmontosaurus bone from South Dakota. Researchers ruled out contamination using mass spectrometry. 🧬 This changes the understanding of biomaterial preservation and opens the way for studying the biology of extinct species at the molecular level. Perhaps museums are full of "treasures" that we have not yet appreciated!

🧬 **Life on Earth may have arisen twice!** German scientists have published a revolutionary study in the journal Science Advances. It turns out that bacteria and archaea evolved independently, replacing metal catalysts with enzymes. This casts doubt on the theory of a single LUCA ancestor and requires rewriting the "tree of life." 🔬🌍

🌌 A supernova explosion 2.5 million years ago could have changed the course of evolution on Earth! Scientists have found traces of the iron-60 isotope in the ocean, proving a nearby stellar explosion. It is believed that a flux of cosmic rays damaged DNA and triggered an evolutionary leap in fish in Lake Tanganyika. From voting glitches to mutations: space influences us more than we think. 🧬🔥 #science #space #evolution #supernova #XABinfo

🌍 Scientists from Caltech have turned the understanding of Earth's chemical history upside down! For a long time, it was believed that 2 billion years ago there was a global shift in the carbon cycle. But new data from samples from Karelia (🇷🇺) shows: anomalies were caused by local contact of magma with rocks, not a planetary cataclysm. The global theory is under threat, the final verdict is up to samples from Gabon. 🔬🧬 #Science #Geology #EarthHistory

🧬 **A new chapter in the history of evolution**: Scientists from UC Berkeley have discovered traces of two unknown ancestors living 800,000 and 1.8 million years ago in the DNA of modern humans. The new TRACE method allowed these "ghost" genes to be found without using fossils. It turns out we carry the legacy not only of Neanderthals but also of other archaic groups that helped us survive. 🧬🌍 #Science #Evolution #Genetics #UCBerkeley

🦜 Scientists are studying the unique Curly-crested Aracari from the Amazon — the only toucan with natural 'curly' feathers. Why do they have such a hairstyle? 🤔 🌿 They live in Brazil, Peru, and Bolivia. 🍎 They eat fruits and insects. 🧐 The function of the curls is still a mystery: either for mating or for protection. #science #nature #toucans #amazon

Scientists from Berkeley have discovered traces of two unknown hominin species in the DNA of modern humans — "ghost" ancestors. One interbred with us in Africa 50,000 years ago, while the other — the "super-archaic" — passed genes through Denisovans. 🧬👻

British scientist Chris Stringer refutes the myth that Homo sapiens simply wiped out other humans. It turns out that climate played a key role, and Neanderthal genes still live on in us! 🧬🦴

🌱 Plants on Earth may live for another 1.8 billion years! A new study refutes pessimistic forecasts about the imminent demise of flora. 🌵 Cacti and succulents are capable of surviving even with a critical drop in CO2 levels, until the Sun evaporates the oceans. 🌍

Scientists have proven that ancient RNA molecules could independently "fix" breaks in their chain even before the appearance of proteins. This discovery confirms the "RNA world" theory and opens up prospects for creating new methods for treating cancer and viral infections. 🧬🔬