Chemistry

RESEARCH ITINERARIES

New latex technology in the hands of a São Paulo native

Chemist Juliane Pereira dos Santos talks about industrial scientific production

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Biochemistry

New biocatalyst may be more efficient at breaking down the water molecule

USP researchers shed light on reaction fundamental to hydrogen fuel production

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Energy

A replica of the Sun created in a lab

Scientists reproduce the same reaction that generates energy in stars and makes them shine

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INTERVIEW

Yvonne Primerano Mascarenhas: Thinking never hurt anyone

Mascarenhas, 91, talks about her academic career and her work advocating science and education

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Archaeology

Pesticides affecting the past

Chemicals used to combat agricultural pests can also damage archaeological artifacts

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TRANSPORT ENGINEERING

Asphalt with less environmental impact

Reusing tailings from mining, rubble from construction and demolition, and other types of waste reduces the consumption of gravel, natural sand, and petroleum products in paving roads and highways

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COVER

Low-carbon livestock

With more head of commercial cattle than any other country in the world, Brazil faces the challenge of reducing greenhouse gas emissions associated with this sector

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AGRICULTURE

Pesticides can affect the health of agricultural workers

With a rise in the use of pesticides in Brazil, rural workers are increasingly being exposed to short- and long-term health impacts

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Chemistry

Collaboration to fight drug resistance

Seven pharmaceutical companies pledge to share surveillance data on antimicrobial resistance

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OPTICS

New system improves the performance of atomic-resolution microscopes

Innovation developed at UNICAMP launched on the global market by American company

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RETROSPECT

Buried wealth in Imperial Brazil

Wilhelm Eschwege conducted the first major survey of the country’s mineral wealth from 1811 to 1821

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AGRONOMY

Strategies aim to reduce external dependence on fertilizer feedstock

Techniques to help farmers use fertilizers more efficiently, inserting microorganisms into seeds, and identifying new feedstock sources have the potential to reduce the need for imports

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Astronomy

Two planets, similar but different

Known as the ice giants, Uranus and Neptune are similar in composition, mass, and size, but they are different shades of blue

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TRANSPORT ENGINEERING

Environmentally friendly asphalt

Reusing mining tailings, construction waste, demolition rubble, and other waste reduces the amount of gravel, natural sand, and petroleum derivatives used in paving material

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COVID-19

Anti-coronavirus semiconductors

Nanotechnological materials emerge as promising alternatives in the battle against SARS-CoV-2 and future pandemics

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infectology

Mosquitoes learn to avoid poison

Disease-carrying insects can learn to avoid insecticides after being exposed just once to nonlethal doses

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COVER

Brazil making efforts to reduce the carbon footprint of livestock

With more head of commercial cattle than any other country in the world, Brazil is striving to mitigate greenhouse gas emissions associated with cattle farming

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Climate

The Amazon produces 8% of the planet’s methane

Most of the gas emitted in the biome comes from wetlands, but the rise in livestock farming and fires has increased emissions associated with human occupation

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Chemistry

Fire-retardant coating inspired by lava

A group of researchers from China and Australia has developed a promising fire-retardant coating inspired by the properties of lava

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Archaeology

233,000-year-old human fossils

The oldest fossils of modern humans ever found are at least 233,000 years old

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GEOLOGY

A very special diamond

A diamond contains a mineral that has never been seen before

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Chemistry

Paint made of mercury and blood

A 1,000-year-old gold mask that belonged to a leader of the Sicán culture was painted with mineral pigment, human blood, and egg white

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Geology

Exoplanets with exotic rocks

The rocky planets orbiting stars outside our Solar System may have a very different chemical composition to Earth

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Materials engineering

The power of copper

Copper nanoparticles can be used to create biocidal fabrics and agricultural pesticides

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Nobel Prize

Everything as before

The Royal Swedish Academy of Sciences decided not to award this year’s Nobel Prize to the development of mRNA-based vaccines

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Chemistry

The Lavoisiers, transformed

Researchers discovered important differences in the original composition of the iconic portrait of Antoine Lavoisier and his wife

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Chemistry

A 100-year-old Brazilian patent

A century ago, chemist and photographer Ubaldo Conrado Augusto Wessel (1891–1993) patented a new formula in the country for bathing photographic papere

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Environment

CO2 extraction plant

The largest plant designed to remove carbon dioxide from the atmosphere began operating in Ireland on September 8

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Retrospect

Perfecting the art of cachaça making

How a self-taught chemist helped to improve cachaça production techniques in the late eighteenth century

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Obituary

Solid knowledge

Oswaldo Luiz Alves helped advance inorganic chemistry and nanotechnology in Brazil

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