Issue # 281 _ July 2019

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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 By
The threat of microplastics
Tiny plastic fragments are everywhere and removing them poses a major challenge By
Reuse, replace, degrade
Experts call for multiple strategies to tackle plastic pollution By

S&T Policy

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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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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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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Interview

Youngsuk Chi: Sustainable transition

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

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Science

Epidemiology

Fattening foods

New evidence links ultra-processed foods to weight gain

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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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Neurology

A new form of dementia

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

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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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Soundscape

Environmental acoustics

Audio recordings are used to profile ecosystems and identify changes caused by humans

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Physics

The unexpected power of friction

Brazilian and German scientists explain unexpected motion of barrel in explosive ping-pong ball experiment

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Technology

Food Engineering

Lab-grown beef

Research into meat made from plants or animal cells with the same taste, smell, and texture as traditional beef is advancing quickly

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Aviation

Cleaner flight

Embraer and WEG team up to develop electric propulsion systems for aviation

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Humanities

Public Health

Disarming Violence

Curbing Brazil’s homicide epidemic hinges on restricting access to firearms, fresh research suggests

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Public policy 

Enhanced treatment

Studies identify new evidence that cash transfer programs help fight tuberculosis in Brazil

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Photography

Much more than a photographer

A retrospective on Marc Ferrez brings to light his dialogue with science and expands knowledge of his work

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