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Research highlights how the meteor impact that ended the dinosaurs helped spawn the mutualistic relationship between ants and fungi, marking an early form of agriculture long before humans farmed. The meteor strike that killed the dinosaurs 66 million years ago may have led to a remarkable mutually beneficial relationship between fungi and ants. The low-light environment caused by the impact created conditions favorable to the spread of fungi that feed on organic matter, which was abundant [...]

Researchers discovered that Earth's biodiversity 800 million years ago was richer than previously thought, identifying ancient lineages of organisms that diversified well before the Cambrian explosion. Their findings challenge long-held views about the Neoproterozoic era and highlight the adaptability of early life forms. A recent study suggests that by the Neoproterozoic period, distinct lineages of amoebae, as well as the ancestors of plants, algae, and animals, had already emerged and [...]

The event that wiped out the dinosaurs wasn’t all bad. The low-light environment caused by the meteor impact some 66 million years ago favored the spread of fungi that feed on organic matter, which was abundant at the time as plants and animals were dying in droves. It was the perfect opportunity for the ancestor of a group of ants to start cultivating these microorganisms, according to a study published on October 3 in the journal Science. “The origin of [...]

Timing is everything Tracing the lineages of agricultural ants to their most recent common ancestor revealed that the ancestor probably lived through the end-Cretaceous mass extinction—the one that killed off the dinosaurs. The researchers argue that the two were almost certainly related. Current models suggest that there was so much dust in the atmosphere after the impact that set off the mass extinction that photosynthesis shut down for nearly two years, meaning minimal plant [...]

Our microplastics problem isn’t going away. These tiny fragments of plastic pollution have previously shown up in our lungs, in ancient rocks, and in bottled water. A new study reveals the extent to which they’re infiltrating the brain, too. An international team of scientists looked at the olfactory bulbs – the masses of brain tissue that take in smell information from the nose – in 15 deceased humans, and found the presence of microplastics [...]

Study: Microplastics in the Olfactory Bulb of the Human Brain. Image Credit: MattL_Images / Shutterstock In a recent study published in the JAMA Network Open a group of researchers investigated the presence and characteristics of microplastics (MP) in the human olfactory bulb (OB), providing insight into potential pathways for microplastic translocation to the brain. Background MP pollution is a growing environmental concern, with MPs found in various human organs, including the lungs, [...]

On June 25, the Centers for Disease Control and Prevention issued a health advisory alerting U.S. providers and the public of an increased risk of dengue virus infections. Dengue, the most common mosquito-borne disease in the world, is having a record-breaking year. The number of reported dengue cases has grown dramatically in the past two decades, increasing from 505,000 cases in 2000 to 5.2 million in 2019, the year that the World Health Organization declared dengue as a top 10 global [...]

Researchers at the University of São Paulo have found that cognitive impairments such as memory loss and attention deficits persist in both severe and mild COVID-19 cases long after initial infection, impacting daily functioning. Their study, involving 302 volunteers, reveals a significant need for cognitive rehabilitation strategies to address these long-term effects, as even patients with mild symptoms showed considerable cognitive challenges. Research indicates that while the most [...]

Researchers at the State University of Campinas in Brazil and the Pasteur Institute in Lille, France, conducted experiments on mice and discovered that administering a specific substance reduced both viral load and inflammation in animals infected with the influenza virus According to a study published in the journal Gut Microbes , researchers from the State University of Campinas (UNICAMP) in São Paulo, Brazil, and Pasteur Institut in Lille, France, have found that a naturally [...]