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Em 2024: 7 notícias
Desde 1995: 14 notícias
When a massive asteroid wiped out the dinosaurs, ants began farming fungi
Publicado em 04 outubro 2024
You have probably seen leaf-cutter ants carrying bits of plants, maybe in a nature documentary, at a science museum or in the “Circle of Life” song at the beginning of the 1994 Disney animated film “The Lion King.”
Those ants don't eat the leaves — instead they bring them back to their nests to feed a garden of fungi, which produce food for the ants.
Researchers have now used DNA analysis to uncover just how long ants have been farming fungi, now [...]
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Scientists Discover Microplastics In The Olfactory Bulbs Of The Human Brain
Publicado em 23 setembro 2024Scientists have found microplastics in many parts of the human body, including the brain. MEM Studio/ Stocksy Microplastics are common in people's everyday environments, and research is ongoing on microplastics in the human body. Recent study findings revealed that microplastics can be present in the brain's olfactory bulbs. While there is limited research, there could be certain health implications, such as an increased risk for neurodegenerative diseases because of exposure [...]ver notícia -
Microplastics found in the human brain
Publicado em 16 setembro 2024Spread the love LONDON – A study published in JAMA Network Open has revealed microplastics in the human brain, with disturbing implications for textiles and fashion. The study, led by Luís Fernando Amato-Lourenço and a team of researchers, uncovered microplastics in the olfactory bulbs of human brains, marking the first time such particles have been detected in this region of the body. The findings were based on autopsies conducted on 15 deceased individuals in [...]ver notícia -
Microplastics found in nose tissue at base of brain, study says
Publicado em 16 setembro 2024The threads and microplastic pieces were discovered in the olfactory bulb, the part of the nose responsible for detecting odors that sits at the base of the brain. “Once present in this structure, there can be translocation to other regions of the brain,” said lead study author Luís Fernando Amato-Lourenço, a postdoctoral microplastics researcher at the Free University of Berlin, in an email. “Translocation depends on several factors, including the shape of [...]ver notícia -
Genome study reveals prehistoric Ethiopian origins of coffee
Publicado em 16 abril 2024Researchers now have unlocked the genome of the Arabica species and traced its origins to a natural mating between two other coffee species an estimated 610,000 to one million years ago in the forests of Ethiopia. That makes this species older than our own species Homo sapiens, which arose in Africa about 300,000 years ago. The researchers sequenced the genomes of 39 Arabica varieties, including a specimen from the 18th century, to create the highest quality genome to date of this species, [...]ver notícia -
Your morning coffee may be hundreds of thousands of years old
Publicado em 15 abril 2024Using genes from coffee plants around the world, researchers built a family tree for the world's most popular type of coffee, known to scientists as Coffea arabica and to coffee lovers simply as “arabica.” The researchers, hoping to learn more about the plants to better protect them from pests and climate change, found that the species emerged around 600,000 years ago through natural crossbreeding of two other coffee species. “In other words, prior to any [...]ver notícia -
Jellyfish with bright red cross found in deep-sea volcanic structure
Publicado em 08 fevereiro 2024Scientists say they have found a new species of Medusae — a type of free-swimming, umbrella-shaped jellyfish. The sea creature — which was first spotted in 2002 in a deep-sea volcanic structure in ocean waters south of Tokyo, Japan — has a bright red "X" on its stomach. The findings were published this past November in the scientific journal Zootaxa . The researchers named the marine animal "Santjordia pagesi" after the Cross of St. George because of [...]ver notícia -
24 ancient earthworks have been detected in the Amazon. There may be 10,000 more, scientists say
Publicado em 10 outubro 2023From deep in the Amazon rainforest, two dozen previously unknown pre-Columbian earthworks have been brought to light — and more than 10,000 such constructs may still be waiting to be discovered, according to new research. Across the Amazon basin, rainforests spread their leafy boughs over millions of kilometers. In the ground far below the treetops are ancient, long-hidden remnants of human habitation. They are preserved as ditches, paths and wells, sometimes forming geometric [...]ver notícia -
Amazon forest carbon emissions skyrocketed under Bolsonaro, study shows
Publicado em 23 agosto 2023(Reuters) - Brazilian space research center INPE said on Wednesday that carbon emissions in the Amazon forest soared in 2019 and 2020 compared to the previous decade due to poor enforcement of environmental protection policies. The forest's carbon emissions amounted to 0.44 billion metric tons in 2019 and 0.52 billion metric tons in 2020, compared to an annual average of 0.24 billion metric tons from 2010-2018, according to the INPE study published in Nature magazine. The study [...]ver notícia -
Researchers use artificial intelligence to help diagnose autism, study says
Publicado em 16 agosto 2023Researchers are proposing using artificial intelligence technology to help diagnose autism spectrum disorder. In a recent article published in Scientific Reports, researchers from Brazil, France and Germany reportedly used magnetic resonance imaging to train a machine learning algorithm. The work – in which the "quantitative diagnostic method" is proposed – was based on brain imaging data for 500 people, with more than 240 that had been diagnosed with [...]ver notícia