Gilberto Stam

Agriculture

Farming technique of the Wauja people in Alto Xingu increases cassava diversity

Wauja agriculture can help recover crops that have suffered from genetic erosion

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Biodiversity

Study lists 409 edible species of wild mushrooms

Study lists 409 edible species of wild mushrooms

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BOTANY

Plants use pollen bombs to compete for space on hummingbird beaks

Success in competition between male gametes can increase chance of reproduction

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ENVIRONMENT

Aquifer depletion threatens forests and rivers

Over-exploitation and climate change are damaging environments that depend on underground water reserves

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Medicine

Oropouche on the prowl

New variant of virus multiplies rapidly and may facilitate disease transmission

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Physiology

Neurotransmitter with dual function protects against obesity

Molecule known to act on the brain, stimulating appetite and weight gain, has the opposite effect when secreted by peripheral nerves, helping to burn fat

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Medicine

Aggressive variant of the Oropouche virus circulating in Brazil

New strain multiplies rapidly and could facilitate transmission

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Ecology

Current fires could change the Pantanal biome forever

Studies assess the impact on mammals, indicating that the region has not yet recovered from the fires of 2020

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BOTANY

Orchids emerged in the Northern Hemisphere 83 million years ago

Plant DNA study suggests modern species have diversified in the tropics in the last five million years, especially in Central America

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Energy

Compact device can reduce power outages

Company intends to increase the use of reclosers, which restore electrical current after short circuits in overhead cables

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Paleontology

Fossil lineage found in Rio Grande do Sul survived the world’s biggest extinction event

Predator lived 252 million years ago and had relatives in the region of present-day Eastern Europe, in what is now Russia

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Paleontology

The injured paw of a saber-toothed tiger

Fossil with signs of infection indicates that the animal, which lived around 100,000 years ago, probably struggled to move and hunt

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Biology

Butantan tests serum against venemous fish

Institute develops antidote for four species that can cause intense pain in people stung in rivers and the sea

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BIOLOGY

First expedition to the Imeri Mountains

Researchers have identified animals and plants isolated by altitude, which may help explain the relationships between species from high areas in northern South America

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VIROLOGY

Mayaro virus causes swelling of the skin, muscles, and joints

In tests on rodents, the pathogen multiplied quickly and affected other organs

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Zoology

Food supply determines reproduction among Brazilian eagles

In four bird of prey species, the factor that most influenced reproductivity was the availability of prey, not environmental changes

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ECOLOGY

Vestiges of the sea in the Amazon interior

Fossils of marine microorganisms indicate that Caribbean waters inundated the Solimões basin at least 11 times over the last 23 million years

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ZOOLOGY

Zoonomia project compares genomes in search of answers about evolution and health

Analysis of an unprecedented volume of data could provide insights into human diseases

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BIOLOGY

First expedition to the Imeri Mountains

Researchers have identified animals and plants isolated by the altitude, which may help explain relationships between species from high areas in the north of South America

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PUBLIC POLICIES

A method to overcome the vicious cycle of poverty

With multiple evidence-based actions, the Dara Institute model can inspire state public policy

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COVID-19

The quest for a Brazilian vaccine

Researchers are testing a range of technologies, but few initiatives will receive the funding needed for costly phase 3 clinical trials

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OBITUARY

The road to excellence

Fulvio Pileggi turned InCor into an important research and medical care institution

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Biology

The faithful frog

Saxicolous frogs only reproduce with two or three specific females, behavior never before seen in amphibians

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EVOLUTION

The richness of the highland grasslands

Vegetation in Brazil underscores the importance of a non-forest ecosystem

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BIOCHEMISTRY

Further danger from the sun

Visible light, in addition to ultraviolet radiation, may also cause skin cancer

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BIOCHEMISTRY

More dangerous than the sun

Visible light, in addition to ultraviolet radiation, may also cause skin cancer

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Botany

Among the algae and lianas

Researchers study the processes of species diversification

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