Science

Paleontology

Hell ant found in the Brazilian Northeast is the oldest in the world

Insect lived 113 million years ago and had a vertical jaw, unlike current species

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Epidemiology

Bacteria that causes leprosy was present in the Americas before the Europeans

Mycobacterium leprae, the main species, was brought over by the Europeans, but M. lepromatosis had already been on the continent for at least 1,000 years

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Biochemistry

First membranes may have laid the foundations for life on Earth

Study simulates primitive cell structures and advances understanding of the origin of life

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Physiology

Physical exercise reduces death of insulin-producing cells

Physical exercise reduces death of insulin-producing cells

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Public health

Number of scorpion stings increased by 154% in Brazil from 2014 to 2023

The Southeast and Northeast regions were where the highest numbers of cases occurred

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Immunology

Vaccines protect the immunocompromised against severe forms of COVID-19

Immune cells that fight the virus compensate for failure to produce antibodies

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Geosciences

Landslide scars and shallower rivers increase Rio Grande do Sul’s vulnerability to rainfall

Millions of tons of sediment were carried from the state’s hills into its waterways

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Cover

Cuts to US science budgets threaten global climate research

Discontinuation of NASA and NOAA projects monitoring the atmosphere and oceans for decades poses a major risk

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Cover

Brazil’s carbon footprint determined by deforestation and agriculture

The two sectors account for 70% of the country’s greenhouse gases emissions

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Interview

José Roque: Physicist talks about the Sirius accelerator and Brazil’s first maximum biosafety level laboratory

Director-General of the Brazilian Center for Research in Energy and Materials (CNPEM) won the 2025 Admiral Álvaro Alberto Award

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Astrophysics

Simulation suggests that Mercury formed from a glancing collision with a body of similar mass

Impact would have ripped away part of the planet's mass and shaped its current geological composition

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Agriculture

Farming technique of the Wauja people in Alto Xingu increases cassava diversity

Wauja agriculture can help recover crops that have suffered from genetic erosion

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Paleoecology

The Atlantic Forest in layers

Research on microalgae in southern São Paulo reveals how an old lake transformed into a swamp

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Interview

Regina Macedo: Biologist reformulates view on bird behavior

São Paulo native from UnB who helped revise concepts about sexual selection in the tropics and cooperative breeding has dedicated herself to another passion since last year: painting

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Public health

Genome diversity could help SUS

Brazil’s national health system (SUS) could treat diseases more efficiently by making use of databases on ancestry and the wide variety embedded in Brazilian DNA

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Genomics

Brazilians are even more mixed-race than you think

New DNA sequencing of 2,723 people reveals greater Indigenous and African ancestry and highlights violence that marked the formation of the Brazilian population

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Astrophysics

Far reaches of the Solar System could be home to another planet

Study suggests the existence of a new world with a mass 7.5 times greater than Earth

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Physics

Advances in experiments manipulating interactions between acoustic and light waves

Control of the interactions between phonons and photons could be used to develop more refined lasers and facilitate quantum information processing

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Climate change

Heatwaves, high acidification, and chlorophyll scarcity devastate the South Atlantic

Simultaneous occurrence of three types of extreme event has become more frequent in the south of the ocean since 2009

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Biodiversity

Study lists 409 edible species of wild mushrooms

Study lists 409 edible species of wild mushrooms

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Mental health

Almost 11 million Brazilians gamble in ways that put their health and finances at risk

Estimate is based on a survey of 4,860 people aged over 14 from 349 municipalities

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Public health

Think carefully before drinking soda or sweetened coffee

Think carefully before drinking soda or sweetened coffee

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Interview

Christiane Taubira: An Amazonian with global reach

After serving as a member of parliament and minister in France, the French-Guyanese economist is preparing to contribute to COP30 with a study on the diversity of local populations

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Genetics

How cancer cells reach the brain

Chemical communication allows tumors from other organs to spread among neurons

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Public health

Breast and cervical cancer mortality rising in Brazil

Increase is more pronounced among women under 40 years old

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ETHOLOGY

Morpho butterflies seem to disappear thanks to iridescent blue color

The coloration, present only on the upper surface of the wings, causes a flash that confuses predators, as well as biologists seeking to understand how they became so bright

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ECOLOGY

Research identifies priority areas for restoring native vegetation in Brazil

Regenerating 30% of the 76 million hectares mapped across six biomes could increase habitat availability for more than 11,000 animal and plant species, as well as helping to mitigate climate change

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PSYCHOLOGY

Elite soccer players are good planners with mental versatility

Study investigated personality traits and cognitive abilities of 153 athletes from the top Brazilian soccer league and 51 from Sweden’s

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PHYSIOLOGY

Blood vessels release compounds that modulate heart strength and blood pressure

Conclusion is based on studies involving reptiles, rodents, and humans, described in more than 30 articles published in recent years

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CLIMATE CHANGE

Global warming amplifies heat waves, which could affect Brazilian cities up to 15 times a year

This type of extreme event has become more frequent, more intense, and longer-lasting in recent decades

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