Ancient Ecosystems
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Complex animals evolved up to 10 million years earlier than previously thought, fossil discovery shows
An illustration of a possible ancient ecosystem based on a new fossil site in Canada's Northwest Territories, inspired by the fossils recently found there.
Medieval pandemic left a hidden legacy in Europe's oldest trees
Medieval pandemic left a hidden legacy in Europe's oldest trees Lisa Lock Scientific Editor Andrew Zinin Lead Editor A new study published in the Proceedings of the National Academy of Sciences demonstrates how radiocarbon dating can reveal the maximum lifespan of Mediterranean hardwoods, uncovering hidden links between human history and long-term ecosystem dynamics. By analyzing mature and ancient oak trees across Italy, researchers found that a millennium of age is attainable from the...
Frozen squirrel scat preserves ancient DNA from hundreds of species
A rich and complex ecosystem stretching back 700,000 years that included woolly mammoths, bison, horses and big cats has been unveiled thanks to DNA preserved in frozen faeces. Arctic ground squirrels (Urocitellus parryii) are rodents about 40 centimetres long, found in cold regions of both North America and Siberia. These areas were joined by a land bridge in the past, with the whole region being known as Beringia.
Ocean collapse triggered ancient wildfires, research suggests
Ocean collapse triggered ancient wildfires, research suggests Gaby Clark Scientific Editor Robert Egan Associate Editor Research led by the University of Alabama found that widespread wildfires during one of Earth's ancient environmental crises did not trigger an ocean collapse but were a consequence of it. The study, published in Science Advances in April, revisits the Late Devonian period, when large parts of the coastal ocean became oxygen-depleted, disrupting marine ecosystems on a...
A rare ancient rainforest set to come back to life
Ulster Wildlife has embarked on a century-long project to restore a rare ancient rainforest. This ambitious initiative aims to bring the unique ecosystem back to life.
A rare ancient rainforest set to come back to life
Ulster Wildlife has embarked on a century-long project to restore a rare ancient rainforest. This ambitious initiative aims to bring the unique ecosystem back to life through dedicated conservation efforts.
Earth's first animals barely evolved until sex changed everything
Earth's first animals barely evolved until sex changed everything - Date: - June 10, 2026 - Source: - University of Cambridge - Summary: - Earth’s earliest animals may have held evolution back because they reproduced asexually, creating low-competition communities that changed very little over time. When environmental pressures pushed them toward sexual reproduction, biodiversity exploded and evolution accelerated dramatically.
Fossil fishes buried in the desert reveal a missing chapter in marine history
Fossil fishes buried in the desert reveal a missing chapter in marine history Gaby Clark Scientific Editor Andrew Zinin Lead Editor When an asteroid struck Earth about 66 million years ago, it ended the age of dinosaurs and transformed life across the planet. The effects of that catastrophe are visible in the fossil record on land, but scientists know far less about what happened to fishes in the seas during the first few million years after the extinction. Like many people during the...
Gene ancestries reveal diverse microbial associations during eukaryogenesis
Abstract The origin of eukaryotes remains a central enigma in biology1. Continuing debates agree on the pivotal role of a symbiosis between an alphaproteobacterium and an Asgard archaeon2,3. However, the nature, timing and contributions of other potential bacterial partners4,5,6 and the role of interactions with viruses7,8,9 remain contentious.
Scientists reveal Ötzi the Iceman's dynamic microbial world
Scientists reveal Ötzi the Iceman's dynamic microbial world June 3 : Ötzi the Iceman died violently roughly 5,300 years ago in the Alpine region of the modern border between Italy and Austria. An arrowhead was found lodged in his left shoulder, having caused fatal bleeding when he was attacked in mountainous terrain. But, in some sense, Ötzi still lives, as new research shows.