Science

PHYSIOLOGY

Cold and heat killed 142,700 people in Brazilian cities from 1997 to 2018

Cold and heat killed 142,700 people in Brazilian cities from 1997 to 2018

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CLIMATE CHANGE

2024 was the first year with global warming above 1.5 °C

All continents broke their average temperature record except for Oceania and Antarctica

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interview

Maria Amélia Veras: A keen eye for disparities

Dr. Maria Amélia Veras investigates the living conditions of transgender and homosexual individuals, alongside viral factors, to curb the spread of sexually transmitted infections

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THERMODYNAMICS

Cold beer for longer

Tall, narrow-based glass with trumpet mouth keeps the beverage cooler during consumption

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ATMOSPHERIC CHEMISTRY

Gas in the Amazon rainforest accelerates cloud formation

Trees emit isoprene, which reacts with other molecules and increases the production of cloud condensation nuclei 100-fold

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INTERVIEW

Anacláudia Rossbach: The quest for more resilient cities

Brazilian director of United Nations program says cities play an important role in the process of adapting to and mitigating climate change

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ZOOLOGY

Temperature affects sensory system development in trout

Temperature affects sensory system development in trout

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BOTANY

Plants use pollen bombs to compete for space on hummingbird beaks

Success in competition between male gametes can increase chance of reproduction

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ENVIRONMENT

Aquifer depletion threatens forests and rivers

Over-exploitation and climate change are damaging environments that depend on underground water reserves

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ECOLOGY

Drought and wildfires reduce forest biodiversity

Although the populations of some plant and animal species are able to recover when rains return, the effects of drought and wildfires can last years

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interview

“If left untreated, bipolar disorder is a progressive disease,” says psychiatrist Flávio Kapczinski

UFRGS researcher is part of an international group defining the progressive stages of the disorder and is leading a survey of mental illnesses in Brazil

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PUBLIC HEALTH

Program that empowers pregnant women to make choices reduces unnecessary cesareans

Created 10 years ago, Parto Certificado prevented more than 20,000 surgical births between 2014 and 2019

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COVER

Life immersed in microplastics

Microscopic particles, which have already been found in various organs and tissues of the human body, have now been identified in the brain

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Geography

Disputed territories

Mineral extraction for energy transition aggravates land possession and water access conflicts in Brazil

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Archaeology

The Amazon revealed

Researchers meet with people from the rainforest to discuss how laser scanning can provide information about the region’s past and contribute to its future

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Biotechnology

Stings neutralized

Scientists developed a serum for the stings of Africanized bees, which are responsible for 30,000 accidents per year in Brazil

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Neurology

A potential model of Alzheimer’s disease

Brazilian researchers identify characteristic lesions of human neurodegenerative disease in the brains of capuchin monkeys

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Medicine

Oropouche on the prowl

New variant of virus multiplies rapidly and may facilitate disease transmission

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Immunology

Protection against severe dengue

The candidate vaccine from Butantan reduces the risk of developing the severe form of the disease by 89%

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Ecology

The surprising faces of the Caatinga

The diversity of landscapes underpins the proposed new classification of semiarid environments

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Physics

Closer to neutrinos

Brazilian scholars have developed methods to purify liquid argon for the international DUNE project; the aim of this experiment is to detect the mysterious particles known as neutrinos

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Climate change

Global levels rise, while national levels fall

Greenhouse gas emissions are increasing worldwide but are decreasing in Brazil because of reduced deforestation in the Amazon

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Ecology

Soil and vegetation care restores the vitality of the Caatinga

Experiments suggest strategies for recovering native vegetation and increasing agricultural production in the semiarid Northeast

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Environment

Belo Monte Dam and drought cause the Volta Grande do Xingu region to dry up

Monitoring indicates that low water flow is preventing fish from reproducing and impeding the way of life of Indigenous people and riverside communities

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Archaeology

The Amazon revealed

Researchers meet with people from the rainforest to discuss how laser scanning can provide information about the region’s past and contribute to its future

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Interview

José Nelson Onuchic: Genetic structure modeler

Brazilian physicist who specializes in protein and DNA folding helped restore the genome of the woolly mammoth

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Immunology

How endometriosis worsens

Compounds released by immune cells stimulate lesion growth, which can be alleviated by migraine medications

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Neurology

Nuances of dementia

In Brazil, Alzheimer's disease is more common in White individuals, while cognitive decline of vascular origin is more frequent in Black individuals

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Interview

Ruy Caldas: From Grande sertão to plant biochemistry

At 84, the agronomist who cultivated research teams and programs across Brazilian universities looks back on his career

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Climate changes

Nature-based solutions can inspire climate change adaptations

Brazilian guide launched at COP29 highlights interventions that could increase the resilience of coastal cities

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