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The “remarkably well-preserved" hell ant was found in limestone in Brazil. (Anderson Lepeco via SWNS) By Stephen Beech A 113-million-year-old fossilized ant is the oldest ever discovered. The “remarkably well-preserved" hell ant was found in limestone in Brazil. 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 [...]

THURSDAY, 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 [...]

Weight 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 [...]

Key Takeaways The combination of chronic arthritic joint pain and depression could speed declines in cognition and memory in older people The brain might be overwhelmed by dealing with these two threats, researchers say The findings are a wake-up call to doctors to take both conditions more seriously in older patients THURSDAY, Nov. 21, 2024 (HealthDay News) -- Having achy, painful joints isn't just a physical woe: Coupled with depression, it could also degrade an older [...]

The world’s second-smallest vertebrate has been discovered - a tiny toad living in a Brazilian rainforest. Researchers say the flea toad measures just 6.95 millimeters in length and can fit on the tip of a finger. The name of the new species, B. dacnis, pays tribute to Project Dacnis, a conservation, research and education NGO that maintains private areas of the Atlantic Rainforest, including the one where the animal was found, in Ubatuba, on the coast of São Paulo [...]

MONDAY, Sept. 16, 2024 (HealthDay News) -- For the first time, scientists have detected microscopic microplastics lodged in the human brain. Researchers in Germany and Brazil say that 8 out of 15 autopsied adults had microplastics detected within their brain's smell centers, the olfactory bulb. The particles were likely breathed in over a lifetime, since tiny floating microplastics are ubiquitous in the air. Although microplastics have already been found in human lungs, intestines, [...]

THURSDAY, 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 [...]

Some plant species will be “winners” while others will be “losers” as global warming forces them to move uphill, suggests a new study. Researchers examined the current range of more than 7,000 plant species in Brazil's Cerrado savanna. They found that the fate of plant species will depend on where they live: lowland species can move uphill for cooler conditions, but mountain plants have nowhere to go. Dr. Mateus Silva, of the University of Exeter said: [...]

Two new colorful species of fish have been found in Brazil's Amazon Basin -- and they are already at risk of disappearing due to extinction. The fish belong to a subfamily called South American darters. The discovery brings the known number of darter species to five. One species, Poecilocharax callipterus, is distinguished by its long, striking red-orange fins and a dark spot at the base of its tail. The other new species, Poecilocharax rhizophilus is the most miniature [...]