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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 Ricardo Zorzetto

Interview

Sergio Tufik: The sleep observer

A medical researcher who began to study the effects of sleep deprivation nearly 50 years ago eventually created one of the world's most productive sleep research teams By Ricardo Zorzetto and Carlos Fioravanti

 

Sections

Photolab

Editorial

Good practices

Data

Notes

Obituary

Retrospect

Careers

 

COVID-19

Another step towards a universal vaccine

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

By Frances Jones

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

By Eduardo Geraque

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

By Fabrício Marques

Higher education

Barriers to inclusion

Affirmative action has yet to gain ground in Brazilian graduate education

By Rodrigo de Oliveira Andrade

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

By Fabrício Marques

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

By Marcos Pivetta

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

By Eduardo Geraque

Physics

Connecting two worlds

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

By Marcos Pivetta

Neuroscience

Epilepsy in vitro

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

By Meghie Rodrigues

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

By Eduardo Geraque

Education

Video games in the classroom

Interactive and immersive games can serve as teaching aids

By Sarah Schmidt

Aeronautical engineering

For the short haul

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

By Tiago Jokura

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

By Suzel Tunes

Tax history

The Empire’s coffers

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

By Diego Viana

Pedagogy

Beyond theorems and equations

How theoretical disputes and political conflicts influenced mathematics teaching

By Bruno de Pierro

Literature

Content and form

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

By Ana Paula Orlandi
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