Issue # 313 _ March 2022

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Cover

A drop in childhood vaccination
The pandemic has exacerbated a decline in immunization rates, which fell by 65% in some states in 2020 By

 

COVID-19

Another step towards a universal vaccine

Clinical trials begin for broad-spectrum vaccines designed to offer protection against multiple coronaviruses

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COVID-19

Cross-infection between species

Humans have transmitted SARS-CoV-2 to animals, at least two of which have passed the virus onto other people

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COVID-19

Maximum velocity

Studies show the quality and importance of preprints (scientific papers shared online as soon as they are written) related to the novel coronavirus

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Higher education

Barriers to inclusion

Affirmative action has yet to gain ground in Brazilian graduate education

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Diffusion

Science highlighted by journalism

Study finds that “embargo emails,” which give media professionals advance access to scientific articles, increase mentions on social media and citations in other papers

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Atmospheric sciences

From Tonga to São Paulo

Smoke from January’s major volcanic eruption on the Pacific island was observed 27 kilometers above the city of São Paulo

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Geology

The São Francisco sands

The Xique-Xique dunes in Bahia were formed by sand carried from the São Francisco River by the wind over the last 100,00 years

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Physics

Connecting two worlds

Study proposes minimum mathematical correction needed to make the theory of relativity compatible with quantum mechanics

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Neuroscience

Epilepsy in vitro

Researchers use lab-grown mini-brains to simulate a type of epilepsy that is unresponsive to treatment

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Primatology

The name of the monkey

DNA analysis confirms the species of pygmy marmoset given to naturalist Spix by indigenous people in the Amazon two centuries ago

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Education

Video games in the classroom

Interactive and immersive games can serve as teaching aids

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Aeronautical engineering

For the short haul

Brazilian startup to manufacture aircraft specially designed to operate out of underserved small-town airports in Brazil

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Biotechnology

Sugarcane editing

EMBRAPA secures regulatory approval of the world’s first transgene-free sugarcane varieties modified using CRISPR, a groundbreaking technique for faster and cheaper gene editing

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Tax history

The Empire’s coffers

Studies on taxation and public spending offer new interpretations on the formation of Brazil

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Pedagogy

Beyond theorems and equations

How theoretical disputes and political conflicts influenced mathematics teaching

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Literature

Content and form

New study explores Russian children’s literature in the 1920s and 1930s

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