Science

Public health

An overweight world

There are now more than one billion people with obesity worldwide, and the number is expected to grow even further in the next decade

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Communication

Brazilian researcher wins award for dance about kangaroos

Doctoral student’s music video sharing the results of his research in Australia won the international Dance Your Ph.D. competition

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Interview

Luis Bahamondes: The paradoxes of women’s health

The specialist in methods of contraception warns about the importance of long-lasting forms of birth control for reducing the risk of unplanned pregnancy and abortion

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Cover

Region in the north of Minas Gerais suffers its driest period in over seven centuries

The conclusion is based on analysis of the chemical composition of cave rocks in the municipality of Januária, located in the São Francisco River basin

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Cover

Global warming accelerates the water cycle and increases evapotranspiration

Excess atmospheric moisture can generate both heavy rainfall and prolonged droughts

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Cover

Brazil getting drier

Global warming makes the climate less humid, leading to emergence of the country’s first arid zone

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Astrophysics

Merging of neutron stars generates second-largest gamma-ray burst

Phenomenon produced rare earth metals in space

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Astrophysics

Concentrated energy

During its most recent period of maximum activity, the Sun emitted an unexpected escalation in high-energy gamma rays at its poles

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Computing

AI systems could monitor animals crossing highways

Study tested the performance of computer vision models

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Paleontology

Fossil lineage found in Rio Grande do Sul survived the world’s biggest extinction event

Predator lived 252 million years ago and had relatives in the region of present-day Eastern Europe, in what is now Russia

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Zoology

Wildcats from the Andes and Central America differ to those found in Brazil

Complex that includes Leopardus tigrinus and L. guttulus gains new species, L. pardinoides, all in danger of extinction

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Ethnobotany

Quilombola communities reveal the use of plants

Participatory research contributes to knowledge and university students develop cattail management plan

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Neurology

Study identifies rare form of Alzheimer’s acquired through treatment no longer used

Individuals were given a hormone extracted from cadavers, contaminated with protein fragments associated with the onset of the disease

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Immunology

Mechanism that keeps the immune response in check also aggravates malaria

The protozoan that causes the disease multiplies freely when certain immune cells are taken out of the fight

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Interview

2024 could become the year with the highest number of dengue cases

FAMERP virologist Maurício Nogueira discusses the characteristics of the current epidemic and the need for the health system to prepare for more patients

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Physics

Study reduces uncertainty about excess magnetism in muons

Study reduces uncertainty about excess magnetism in muons

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Paleontology

The injured paw of a saber-toothed tiger

Fossil with signs of infection indicates that the animal, which lived around 100,000 years ago, probably struggled to move and hunt

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Archaeology

Digital map reveals rock art in São Paulo

Cutting-edge technology used to unite data about sites with prehistoric paintings and engravings in the state in an interactive format

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Ecology

Theodoro, Soneca, and other jaguars in the forests of São Paulo

Guide identifies 51 jaguars, mostly in the far west and south of the state

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Interview

Tasso Azevedo: Deforestation frontiers

Head of MapBiomas explains why deforestation declined in the Amazon in 2023, but increased in the Cerrado

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Environment

The silent drama of the Pampas

In the past four decades, 30% of the biome’s native vegetation has been occupied by soybean cultivation and even by planted eucalyptus forests

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Meteorology

2023 was the hottest year on the planet since 1850

The global average temperature was 14.98 °C, almost 1.5 °C higher than in the preindustrial period

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Health economics

Half of all tuberculosis patients spend more than 20% of their annual family income on treatment

Extra consultations or exams, transportation, food, and loss of income add up to US$1,573.40, on average

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Epidemiology

Around 400,000 people died due to cardiovascular problems in Brazil in 2022

Heart attacks and different types of strokes accounted for 76% of cases

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Pediatrics

Anemia and nutrient deficiencies fall while being overweight increases among children up to 5 years old

A nationwide study also found that ultra-processed foods are consumed at a high frequency

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Cover

Amazonian Giants

Expedition investigates the scientific enigma of 80-meter-tall trees in Amapá

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Astrophysics

Star brightness changes every four years, lighting up part of the surrounding nebula

Cloud of gas and dust is illuminated by the wave phenomenon, known as a light echo

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Immunology

Cutaneous leishmaniasis may be aggravated by viral and bacterial coinfections

Cutaneous leishmaniasis may be aggravated by viral and bacterial coinfections

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Fetal medicine

Digital atlas identifies the ideal evolution of a baby’s brain during pregnancy

3D ultrasounds of the brains of 899 healthy babies were used to map development of the organ from the fourteenth week of pregnancy onwards

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Ecology

Caatinga shrinking

Agriculture has transformed 89% of typical native vegetation in Northeast Brazil

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