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A large-scale genomic analysis reveals Brazil as one of the most genetically diverse countries on Earth – shaped by centuries of colonization, forced migration, and Indigenous heritage, researchers report. The study, which leveraged newly generated whole-genome sequences of over 2,700 individuals, uncovered more than 8.7 million previously undocumented genetic variants, including those potentially affecting population health. The colonization of Brazil by Europeans from the 15th to 20th [...]

Microalgae of the species Monoraphidium contortum have the ability to remove antibiotic residues from water, especially sulfamethoxazole and trimethoprim. This reduces the risk of environmental contamination, avoiding serious consequences for the ecosystem and human health. This was the conclusion of a study conducted in partnership by Brazilian researchers affiliated with the Federal University of ABC (UFABC) in Santo André, the Federal University of Itajubá (UNIFEI) in the [...]

In a new study, researchers identified a molecule produced by a particular type of brain cell that reversed the cognitive decline seen in both healthy aging and dementia. It provides a deeper understanding of the aging process and a potential target for future treatments. Aging causes a decline in cognition, as does dementia, including Alzheimer’s disease (although the former is a natural process, the latter is pathological). For years, scientists have been investigating ways of [...]

As the effects of climate change intensify in urban areas, it is essential to strengthen the organizational capacity of civil defense units to implement disaster risk management, including prevention and mitigation. To contribute to this debate, a study conducted by researchers from the Brazilian National Center for Monitoring and Early Warning of Natural Disasters (CEMADEN) proposes a public policy focused on five fronts. These are: 1) professionalization of managers and officials in the [...]

In Brazil, researchers from the Federal University of Rio de Janeiro (UFRJ) and collaborators from the University of São Paulo (USP) have discovered that a molecule called hevin can reverse cognitive impairment. The study, conducted in mice, showed that this glycoprotein produced by brain cells (astrocytes) is able to increase the connections between neurons (synapses) in aged rodents and in animal models of Alzheimer's disease. "Hevin is a well-known molecule involved in [...]

A group of researchers affiliated with the Center for Innovation in New Energies ( CINE ) has developed a method for purifying materials that is simple, economical and has a low environmental impact. The scientists have managed to improve the efficiency of a film that can be used in some green hydrogen production processes. Known as mullite-type bismuth ferrite (Bi₂Fe₄O₉), the material has been used as a photoelectrocatalyst in the production of hydrogen by photoelectron [...]

A study which followed people aged in their 50s for eight years found those with hearing loss had an increased risk of cognitive decline. The research was conducted as part of the Brazilian Longitudinal Study of Adult Health with results published in the Journal of Alzheimer’s Disease on 8 May 2025. Study author, physician Associate Professor Claudia Suemoto from the University of São Paulo’s Medical School, said results underscored the need for increased attention to [...]

The deconstruction of cellulose is essential for the conversion of biomass into fuels and chemicals. But cellulose, the most abundant renewable polymer on the planet, is extremely recalcitrant to biological depolymerization. Although composed entirely of glucose units, its crystalline microfibrillar structure and association with lignin and hemicelluloses in plant cell walls make it highly resistant to degradation. As a result, its degradation in nature is slow and requires complex enzymatic [...]

A new study conducted in Brazil has found that hearing loss during middle age may accelerate cognitive decline, raising concerns about the link between hearing health and dementia. The research, published in the Journal of Alzheimer’s Disease, followed 805 people in their 50s and found that those with hearing loss were at a greater risk of experiencing memory problems and cognitive decline as they aged. The findings highlight the importance of paying attention to hearing health [...]