Redação

Chemistry

Paper and sponge made from pollen

Researchers transformed grains of sunflower pollen into a microgel with controllable properties and synthesized products with consistencies of gel, paper, and sponge

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Archaeology

The new dimensions of Ur

Ur may have occupied an area up to eight times greater than previously estimated by archaeologists in the 1980s

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Paleontology

A giant tortoise

The largest freshwater turtle that ever existed, possibly the largest of all turtles, lived between 13.8 million and 5.3 million years ago in South America, inhabiting a larger area than previously thought

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Innovation

More agile drones

Engineers have developed a system that allows drones to detect and quickly avoid moving objects in the air

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Economy

Billion-dollar divorce

The joint venture announced two years ago between Embraer and Boeing has been canceled

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Archaeology

Primitive gardens in the Amazon

Evidence of cassava and pumpkin cultivation, dated at 10,350 and 10,250 years ago respectively, helped an international team of researchers to identify 4,700 artificial forests in the Llanos de Moxos region in Bolivia

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Preprints

Preprints and published articles

A study led by researchers from the Federal University of Rio de Janeiro compared preliminary scientific manuscripts shared on preprint repositories with their final versions published in scientific journals after peer review

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Geology

Rain awakens volcano in Hawaii

An abnormal volume of rainfall in early 2018 may have intensified the eruption of Kīlauea, a volcano in Hawaii, USA, in May of the same year.

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Biology

Why females live longer

The difference in lifespan between the two sexes, the researchers noted, is not due to different aging rates

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Data

Scientific publications on artificial intelligence1

The number of scientific articles on artificial intelligence (AI) published worldwide tripled

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Good practices

Mysterious and fraudulent authorship

The scientific journal Future Generation Computer Systems recently announced the retraction of a 2018 article

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Good practices

A keen eye for detecting manipulation

In an effort to improve the quality of the scientific articles it publishes, the Journal of Clinical Investigation began requiring that all authors provide the raw data produced by their experiments

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Photolab

Working overtime to defeat Covid-19

Researcher create face shields using a 3D printer

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Genetics

America, the African mosaic

The transatlantic slave trade shaped the genetic makeup of populations across North and South America

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Environment

Beaches at risk of disappearing

Half of the planet's beaches could disappear by the end of the century due to rising sea levels and erosion caused by climate change

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Interview

Gene therapy on the horizon

American biochemist Jennifer Doudna, from the University of California, Berkeley, is one of the best-known names behind the CRISPR-Cas9 gene-editing technique

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Astrophysics

Mars in super-high resolution

In March, NASA presented the highest resolution panoramic image ever taken of the surface of Mars

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Nanotechnology

Perfectly ripe fruit

A partnership between the Brazilian Agricultural Research Corporation and Siena Company has resulted in the development of a sensor that monitors the ripeness of fruit

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Funding

Victories for science in Brazilian Congress

The scientific community earned two victories in Brazilian Congress in March

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Medicine

The risks of malaria during pregnancy

Malaria during pregnancy can lead to premature birth and low birth weight

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Sports

Sports and injuries

Athletes over the age of 30 should pay special attention to injury risk

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Environment

Smoke at the top of the world

Since the eighteenth century, global industry has been leaving its mark at one of the highest points in the world: the Himalayas mountain range

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Zoology

A smell and heat detector

A dog’s nose is also capable of measuring nearby heat, according to a new study

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Data

Scientific research on coronavirus

The coronaviridae virus family encompasses approximately 40 known species

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Good practices

Error leads to retraction of controversial article

The journal Scientific Reports announced the retraction of a 2019 article claiming that fluctuations in the Sun's magnetic field play a role in climate change on Earth

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Good practices

Young academics are more afraid of reporting misconduct

A group of scientific integrity experts from the Netherlands and Norway interviewed 1,100 researchers from eight European universities

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Photolab

Plant-stem lace

If you take a thin slice of a young stem of Acleisanthes chenopodioides and look at it under a microscope, this is what you will see

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Biodiversity

The diversity of the Caatinga

The Caatinga is home to a range of flowering plants proportionally more diverse than the Amazon rainforest

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Economy

Undeclared foreign funding

The US Department of Education is investigating Harvard and Yale universities for failing to declare funding received from foreign governments

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Geography

Human activity alters river mouths

Amazon River delta is shrinking by 1 km2 per year because of siltation

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