Highlights

Genetics

Scattered ancestry

Mestizos from Brazil's southern states have more Amerindian DNA lineage than modern-day indigenous groups in the region.

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Neurology

A new form of dementia

Confused with Alzheimer’s, LATE appears with greater frequency in octogenarians

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Public health

Kissing bugs have arrived in Greater São Paulo

Since 2015, more than 100 insects have been captured, 30% of them infected with the protozoan that causes Chagas disease

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Epidemiology

Fattening foods

New evidence links ultra-processed foods to weight gain

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Interview

Youngsuk Chi: Sustainable transition

For the president of Elsevier, Plan S is viable, but only over the long term

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Reproducibility

A test-tube mirage

Failed cold fusion experiment attempted 30 years ago showed how illusory discoveries trigger self-correcting mechanisms in science

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Funding

New life for the Ipiranga Museum

With support from public and private companies, construction to restore and modernize the monumental building begins in September

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S&T Policy

Tools for planning the future

Stability in funding at state universities in São Paulo allowed for continual education about financial management

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Interview

Silvia Pimentel: Women’s rights

The lawyer who chaired the most important international committee for the defense of women’s rights speaks about the more than four decades she spent in teaching, research, and activism

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Cover

Reuse, replace, degrade

Experts call for multiple strategies to tackle plastic pollution

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Cover

The threat of microplastics

Tiny plastic fragments are everywhere and removing them poses a major challenge

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Cover

Plastic Planet

Invented a century ago, the polymeric material that at first seemed to make modern life so much easier has now become a major environmental problem

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Ethology

Changes in primate culture

Capuchin monkeys (Sapajus libidinosus) living in Serra da Capivara National Park in Piauí 3,000 years ago knew how to break and crush fruits and seeds using stones

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Scientometrics

China ahead of the USA

In 2017, the Scopus database recorded 456,960 articles, books, and conference proceedings produced by China, accounting for 18.9% of global scientific output

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Environment

Climate change and the Amazon

Climate change could become the primary threat to the Amazon rainforest in the coming decades, contributing to a significant decline in tree diversity in the region by 2050

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