Issue # 356 _ October 2025

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Cover

Brazil invests in research to master the production cycle of rare-earth minerals and supermagnets
Minerals at the center of global geopolitical disputes are considered essential for the energy transition By and
Urban mining can reduce environmental impacts of rare-earth mineral production
Research groups are developing methodologies for recycling magnets, batteries, and other materials containing these chemical elements By and

 

Entrepreneurship

Study indicates that 15% of Brazilian PhD holders own businesses

Survey of doctoral students who graduated in 2021 and 2022 identified a range of profiles, including entrepreneurs, contractors, and others seeking further training to improve existing businesses

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Communication

Warnings left by users on social media posts containing misinformation have little effect

A study conducted in Brazil, India, and the United Kingdom evaluated data from 3,000 people

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Conservation

Ecological strategies seek to restore wildlife populations and reverse extinctions

Rewilding and de-extinction represent a new era in ecosystem restoration

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Ecology

Plastic and climate change threaten reproduction of Amazonian fungi

The diversity and balance of aquatic microorganism communities in Amazonian waterways are being altered by a combination of microplastics and climate change

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Atmospheric sciences

Deforestation is making the Amazon drier while global climate change is making it warmer

Deforestation is responsible for almost 75% of the decline in rainfall during the region's dry season

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Environment

Over 85% of municipalities in Brazil have no climate change adaptation plan

Index calculates capacity to reduce the impacts of extreme events in more than 5,000 cities

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Public policies

Climate change affects children's lives and exacerbates social inequality

Extreme events impact aspects such as school attendance and nutrition

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Epidemiology

Hormonal and digestive system diseases increase the risk of Parkinson's and Alzheimer's

Researchers examine the role common metabolic diseases play in the development of neurodegenerative problems

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Interview

FIOCRUZ doctor discusses the problems faced by children with microcephaly caused by Zika

Families suffer from a lack of economic support and medication shortages, as well as neglect

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Astrophysics

Black hole with a mass equivalent to 36 billion suns is one of the largest ever found

Discovery was made at the center of one of the galaxies in the system known as the Cosmic Horseshoe

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Aeronautical engineering

Drones used to fight fires and monitor environmental conditions

University in São Paulo is working with companies to design drones capable of fighting forest fires and measuring greenhouse gas concentrations

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Biomedical engineering

Camera attached to backpack alerts visually impaired to obstacles

Prototype aims to complement the traditional cane, which only detects hazards near the ground

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Interview

Fighting fraud in biometric systems is a game of cat and mouse, says expert

Researchers and companies are turning to AI to improve the security of these devices, which are under constant threat

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Management

Calculator estimates methane emitted by intensive livestock farming

App simplifies the calculation of greenhouse gases emitted from the waste of animals raised in confinement and can help managers set reduction targets

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Anthropology

How religions incorporate debates about race and gender in Brazil

Catholic and Evangelical groups combine spirituality with social issues, questioning traditions and proposing alternative interpretations of the Bible

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Publishing

Journey taken by publishers offers insight into the history of the book market in Brazil

Jiro Takahashi, Jorge Zahar, and Paul Monteil helped transform the reading habits of several generations of Brazilians

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