Marcos Pivetta

ASTROPHYSICS

Complex organic molecules found in the ice of nascent stars for the first time

Complex molecules associated to the origins of life identified in solid phase in two emerging stars

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PHYSICS

Quantum startup develops random-number generator used in lottery

Chilean company was founded based on a method developed by a physicist from Minas Gerais and his Polish colleague

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PLANNING

Quantum technologies need to attract more engineers

The topic was addressed at a thematic meeting held in Rio de Janeiro and São Paulo, a preparatory event for the 5th National Conference on Science, Technology, and Innovation

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Interview

Physicist Hans Herrmann explains why dunes are such a fascinating and complex system

German researcher based in Ceará studies the formation and movement of sand dunes sculpted by the wind

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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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Physics

Study reduces uncertainty about excess magnetism in muons

Study reduces uncertainty about excess magnetism in muons

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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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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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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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Climate change

COP28 acknowledges the role fossil fuels play in global warming, but stops short of banning them

United Nations conference held in Dubai recommends investing in clean and renewable energy sources

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Cover

The return of TerraClass

EMBRAPA and INPE resume the mapping of land use and cover in the Amazon, 14% of which is occupied by pasture and agriculture

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Cover

Forest guardians

Multiple satellite systems monitor deforestation in the Amazon and provide support for the target of zero deforestation by 2030

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Interview

Ima Vieira: Restore the forest with justice

Ecologist from Pará says that deforested areas of the Amazon often regenerate, but that the recovery bill must be paid by those who destroyed the forest

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Cover

Maps show that 14% of the Amazon is occupied by pasture and agriculture

EMBRAPA and INPE restart the TerraClass project, which monitors land use and cover in deforested areas of the biome

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Cover

Forest Guardians

Multiple systems are used to monitor deforestation in the Amazon and guide oversight

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Climate

Droughts worsen in the Cerrado

Rainfall in the Cerrado’s dry season has decreased by up to 50% in the last 30 years

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Physics

Gravity also attracts antimatter

Gravitational force on antiparticles is equal to the force exerted on particles

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Astrophysics

James Webb data challenges cosmology

Telescope observations fuel debate about the formation of galaxies and the speed at which the Universe is expanding

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PHYSICS

Supposed room-temperature superconductors fail to convince critics

Independent experiments have been unable confirm the claims that, even outside controlled conditions, the materials are capable of transmitting electricity without energy loss

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INTERVIEW

Pedro Leite da Silva Dias & Maria Assunção Faus: A good time for research

Married meteorologists discuss how studies on the atmosphere in the Amazon have strengthened Brazilian climate science and warn about the challenges ahead

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ASTROPHYSICS

Artificial intelligence helps distinguish spiral galaxies from elliptical ones

AI algorithms classify 160,000 groups of billions of stars from images obtained by a Brazilian robotic telescope

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Cover

Temperature variations may cause five million deaths per year

The number is equivalent to 9.5% of all global deaths, with 75% of fatal victims living in Asia and Africa

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Cover

Urban heat islands make even small and midsized towns warmer

Temperatures can vary by as much as 10 degrees Celsius between areas covered by concrete and neighborhoods with more vegetation

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Cover

July was the hottest month in recent history and broke temperature records

Global warming shows no signs of letting up, causing forest fires in the Northern Hemisphere’s summer and a mild winter below the Equator

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BIOFUEL

Liquid enhancement

Applying a single dose of natural compounds to sugarcane crops can boost the production of second-generation ethanol

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INTERVIEW

Vanderlei Bagnato: “This isn’t a case of brain drain”

Currently on leave from USP, physicist Vanderlei Bagnato has spent most of his time in Texas, where he is working to set up a biophotonics laboratory modeled after the center he heads in São Paulo

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