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Em 2025: 3 notícias
Desde 1995: 13 notícias
113-million-year-old ant found in Brazil oldest ever discovered
Publicado em 24 de abril de 2025
Scientists say it is a member of Haidomyrmecinae - an extinct group that only lived during the Cretaceous period.
They had highly specialized, "scythe-like" jaws that they probably used to pin or impale prey, according to a study published in the journal Current Biology
Study author Anderson Lepeco said: “Our team has discovered a new fossil ant species representing the earliest undisputable geological record of ants.
“What makes this discovery particularly [...]
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Heavy Drinking Linked To Brain Damage, Increased Risk Of Dementia
Publicado em 10 abril 2025THURSDAY, April 10, 2025 (HealthDay News) -- Heavy drinkers have an increased risk of developing brain lesions associated with memory and thinking problems, a new study says. Folks who imbibe eight or more alcoholic drinks a week have an increased risk of hyaline arteriolosclerosis, or a thickening and narrowing of the small arteries that feed the brain, researchers reported April 9 in the journal Neurology This condition makes it harder for blood to flow, which can damage the brain over [...]ver notícia -
Study claims weight training can help reduce dementia risk
Publicado em 07 abril 2025Weight training helps protect older people from dementia , according to new research. Volunteers with mild cognitive impairment who practiced strength training showed improvements in memory and brain anatomy after six months, say scientists. Weight training has been previously shown to improve strength and muscle mass, reduce body fat, and contribute to well-being and mental health. Now, a new study conducted at the State University of Campinas (UNICAMP) in Brazil suggests it protects [...]ver notícia -
How harmful are microplastics to human health?
Publicado em 30 outubro 2024Microplastics have been found throughout the human body -- including inside lungs, blood and brains -- and while it is not yet clear how harmful they are to our health, some researchers are sounding the alarm. These tiny pieces of plastic have been detected almost everywhere on Earth, from the deepest oceans to the highest mountains, as well as in the air, water, soil and food chain. Every day humans ingest, inhale or otherwise come in contact with microplastics, which are less than five [...]ver notícia -
Breathing Could Bring Microplastics Into the Human Brain, Study Shows
Publicado em 16 setembro 2024Key Takeaways Microplastics have been found in numerous human organs, and a new autopsy study finds the brain might now be included on that list 8 of 15 autopsies showed evidence of microplastics in the brain's olfactory bulb The particles might be breathed in, since they are ubiquitous components of air, especially indoors Researchers in Germany and Brazil say that 8 out of 15 autopsied adults had microplastics detected within their brain's smell [...]ver notícia -
Wildfires caused major CO2 emissions last year: annual study
Publicado em 13 agosto 2024Paris (AFP) – Wildfires made more frequent and intense by climate change released significant quantities of CO2 into the air in 2023-2024, said a first-of-its-kind annual study published Wednesday. Fires in natural areas caused 8.6 billion tonnes of CO2 emissions worldwide between March 2023 and February 2024 -- 16 percent above average. Only a relatively calm fires season in the African savannah prevented the 2023-2024 season from breaking a fresh record for CO2 emissions at the [...]ver notícia -
PTSD Triples Odds for Teeth Grinding, Study Finds
Publicado em 16 maio 2024THURSDAY, May 16, 2024 (HealthDay News) -- People with post-traumatic stress disorder (PTSD) face more than triple the odds of bruxism, otherwise known as teeth grinding, a new study finds. The small study of 76 Brazilian adults (38 diagnosed with PTSD and 38 without the condition) found much higher incidence of daytime teeth grinding. “Our study showed that PTSD can be manifested orally, in bruxism and a higher level of pain after a clinical dental examination. This requires joint [...]ver notícia -
In Brazil, hopes to use AI to save wildlife from roadkill fate
Publicado em 23 abril 2024Rio de Janeiro (AFP) – In Brazil, where about 16 wild animals become roadkill every second, a computer scientist has come up with a futuristic solution to this everyday problem: using AI to alert drivers to their presence. Direct strikes on the vast South American country's extensive road network are the top threat to numerous species, forced to live in ever-closer proximity with humans. According to the Brazilian Center for Road Ecology (CBEE), some 475 million vertebrate [...]ver notícia -
Your morning coffee may be more than a half million years old
Publicado em 15 abril 2024That coffee you slurped this morning? It’s 600,000 years old. Using 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 [...]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