Issue # 299 _ January 2021
Cover
- The economics of caregiving
- Increase in population life expectancy and new family arrangements produce higher demand for caregivers and complicate government decision-making By Christina Queiroz
- An expanding market
- In Latin America, remunerated caregiving work accounts for 16% of jobs, with 47 million people working in the area By Christina Queiroz
COVID-19

Approval strategy
Amid uncertainty, São Paulo announces state vaccination plan
By Carlos FioravantiCOVID-19

Distribution challenges
Governments need to work with pharmaceutical and logistics companies to overcome obstacles to start the SARS-CoV-2 immunization campaign
By Tiago JokuraCOVID-19

The era of genetic vaccines
The vaccines from BioNTech/Pfizer and Moderna result from historical investments in messenger RNA technology leading to the creation of new products
By Eduardo GeraqueCOVID-19

The mutation risk
New strains of SARS-Cov-2, such as the one identified in the United Kingdom in December, could make the pathogen more transmissible and virulent
By Frances JonesBibliometrics

Science with impact
List of researchers with highly cited works includes more Brazilians in 2020
By Rodrigo de Oliveira AndradeScientific publications

The Plan S labyrinth
In effect since January 1, the open-access initiative reduces ambitions and faces uncertainty about its reach
By Fabrício MarquesPaleontology

Pterosaur precursors
A new study suggests that a group of small extinct ground-dwelling vertebrates, called lagerpetids, were the closest relatives of these mysterious winged reptiles
By Marcos PivettaArchaeology

The interconnected peoples of ancient Amazon
Road networks connected villages as far as 10 km apart and interwove their cultures in pre-Columbian periods
By Maria GuimarãesBotany

Tropical trees die sooner
Tropical species have average lifespans of 186 years, while temperate species live for an average 322 years, a study on 438 tree species shows
By Eduardo GeraqueInterview

Gustavo Turecki: Detective of the mind
Born in Argentina and educated in Brazil, a dedicated psychiatrist investigates the causes of suicide
By Ricardo ZorzettoOncology

Better chances with time
The risk of rectal cancer recurrence is less than 5% for patients who have been tumor-free for three years after nonsurgical treatment with radiation therapy and chemotherapy
By Sarah SchmidtAstrophysics

Persistent connection
International team captures unexpected simultaneous creation of star and planet in system continuously sustained by cloud of gas
By Igor ZolnerkevicCrop science

Soil genetics
New mineral mapping technique can help farmers save on farm inputs and minimize environmental impacts
By Domingos ZaparolliAeronautical engineering

The Atobá takes flight
Rio-based firm successfully develops large-sized unmanned aircraft for defense and security missions
By Yuri Vasconcelos