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AUTOMOTIVE ENGINEERING

Trucks and buses operate without drivers

Autonomous navigation system developed by Vitória-based startup allows vehicles to identify obstacles and travel on predefined routes

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ASTROPHYSICS

Giant atoms could be the basis for more refined quantum sensors

Controlling the so-called Rydberg state is the key to producing this type of structure

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ASTROPHYSICS

Hotter dry season reduces survival rate of Amazonian birds by 63%

Impact of 1 °C increase in average temperature was observed on 29 species living in a preserved area of the rainforest

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ORNITHOLOGY

Hotter dry season reduces survival rate of Amazonian birds by 63%

Impact of 1 °C increase in average temperature was observed on 29 species living in a preserved area of the rainforest

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EVOLUTION

The ultra-black wasps of the Caatinga

Newly identified species exhibit rare evolutionary mechanism that allows them to maintain a body temperature lower than the surrounding environment

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BIOENERGY

Enzyme from bacteria in the soil may increase productivity of second-generation ethanol

Microorganism protein breaks down cellulose in sugarcane bagasse into smaller sugar, which ferments more easily

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ARCHAEOLOGY

The Amazon’s ancient cornfields

Archaeological sites in Bolivia reveal traces of large-scale corn farming that once sustained a dense human population—and may have even played a role in domesticating ducks

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PHYSIOLOGY

Study seeks to explain why Alzheimer’s is more common in women

Levels of molecules linked to energy production and gene activation control are lower in females with varying degrees of dementia

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IMMUNOLOGY

Genetic analysis and autopsies reveal how yellow fever progresses

Genetic analysis and autopsies reveal how yellow fever progresses

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EPIDEMIOLOGY

Antimicrobial-resistant bacteria could kill 39 million people by 2050

Almost 10% of deaths are expected to occur in Latin America and the Caribbean

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data

Women graduating from higher education in 2023

Data show proportion of women among higher education graduates in 2023

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Good Practices

Cuckoos in the nest

Study finds that one in every 25 highly cited scientists has had a paper retracted, sparking a debate about prestige and integrity

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GOOD PRACTICES

Behavior guide

Study examines the importance of codes of conduct to prevent sexual harassment at conferences

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GOOD PRACTICES

Unsustainable situation

Neuroscientist accused of manipulating images in Alzheimer's article resigns from university

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ETHICS

Online science communicators discuss limits for advertising campaigns

Online science communicators discuss limits for advertising campaigns

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INTEGRITY

Use of fake email addresses leads to retraction of 45 articles by Brazilian scientists

Peer review was compromised: three reviewers suggested by the authors were not who they appeared to be

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Interview

Allaine Cerwonka: Artificial intelligence connections

Director of UK's national institute for data science discusses research collaborations with Brazil

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INTERVIEW

Ivo Karmann: Geologist of the void

In good humor and with a strong team spirit, researcher tells of the beginnings and evolution of scientific investigations into caves in Brazil

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Environment

Rondônia in flames 43,000 years ago

Macrocharcoal reveals forest fires in Rondônia 43,000 years ago

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Obstetrics

More twins from late motherhood

Late pregnancy leads to higher chance of twins or triplets

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Astrophysics

Our neighboring galaxy in detail

James Webb Telescope details neighboring galaxy of Andromeda

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Zoology

Climate caused megafauna extinction

Lack of rain accelerated extinction of megafauna in Northeast Brazil

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Physiology

Immune cells carry microplastics to the brain

Ingested microplastics can reach the brain within hours

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Agriculture

Pesticides in the rain

Rainwater in agricultural areas may contain pesticides

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Physics

Traces of a super-energetic neutrino under the sea

Ultra-energetic neutrino detected in the Mediterranean

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Biodiversity

The cries of snakes

Female snakes emit high-pitched sounds when threatened

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Geophysics

Earth’s not so solid core

Surface of Earth's inner core may be viscous rather than solid

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Public health

Teenagers, get moving!

Drunkenness among Brazilian teenagers higher than in neighboring countries

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Zoology

India, home of the tigers

India's wild tiger population doubles in just over a decade

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Genetics

Sunburn damages RNA

Sunburn damages RNA, not just DNA

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