Science

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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Interview

Sergio Rezende: A compass to find the way

The physicist and former minister explains what he expects from the debates at the 5th National Science, Technology, and Innovation Conference, which takes place in June 2024

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Interview

Ima Vieira: Restore the forest with justice

Ecologist from Pará says that deforested areas of the Amazon often regenerate, but that the recovery bill must be paid by those who destroyed the forest

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Ethology

Communication and diet different in urban primates

Pied tamarins in Manaus use smell to complement vocalizations, while howler monkeys in Rio Grande do Sul add barbecue to their vegetarian diet

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Ecology

The roots of Amazonian biodiversity

By reversing the flow direction of the rivers, molding the surface, and blocking moisture from the Atlantic, the Andes made the forest a refuge and birthplace for new species of plants and animals

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Zoology

Guide to Amazon snakes launched at the Butantan Institute

Illustrated panels provide information and teach visitors how to recognize 160 species that inhabit the biome

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Cover

Maps show that 14% of the Amazon is occupied by pasture and agriculture

EMBRAPA and INPE restart the TerraClass project, which monitors land use and cover in deforested areas of the biome

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Cover

Forest Guardians

Multiple systems are used to monitor deforestation in the Amazon and guide oversight

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Paleontology

An iberian pterosaur

Lusognathus almadrava is the first species of winged reptile described in Portugal, with Brazilian participation

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Archaeology

Human footprints suggest large population in ancient Amazon

Human footprints suggest large population in ancient Amazon

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Epidemiology

Suicide rate among indigenous people almost three times higher than the general population

Suicide rate among Indigenous people is three times higher than in the general population

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Genetics

Chikungunya virus caused seven outbreaks in Brazil in 10 years

The agent that causes the disease has already been identified in 60% of municipalities

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Ecology

Parasites that turn spiders into zombies

Infected by fungi, invertebrates climb higher to die

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Environment

Plastic rocks

A mixture of minerals, animal remains, and synthetic polymers has emerged as another form of pollution and a threat to the marine environment

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Climate

Droughts worsen in the Cerrado

Rainfall in the Cerrado’s dry season has decreased by up to 50% in the last 30 years

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Nobel Prize

Eleven people received a Nobel Prize in 2023

Four were women, the same number as in 2018 and 2020, only lower than in 2009, when there were five winners

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Physics

Gravity also attracts antimatter

Gravitational force on antiparticles is equal to the force exerted on particles

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Astrophysics

James Webb data challenges cosmology

Telescope observations fuel debate about the formation of galaxies and the speed at which the Universe is expanding

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CONSERVATION

The effects of subsistence hunting in sustainable-use reserves in the Amazon

Impacts on animal populations are greater within five kilometers of human communities

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EVOLUTION

The long history of bees

The pollinating insects are estimated to have appeared 120 million years ago on the Western Gondwana supercontinent, formed by what is currently South America and Africa

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ECOLOGY

Orchid uses trick to trap pollinators

Specialized structures guide flies through passages where the insect exchanges pollen between flowers

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GENETICS

Avian flu virus spreading across Brazil came from the coast of Chile or Peru

Pathogen obtained from a dead bird in Espírito Santo is genetically similar to the one circulating in the two neighboring South American countries

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BIOLOGY

Yellow fever virus has been circulating uninterrupted in southern Brazil for seven years

The disease vector arrived in the country’s southeast two to three years earlier than previously thought

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COVID-19

Nonpharmaceutical interventions helped reduce the impact of COVID-19

Nonpharmaceutical interventions helped reduce the impact of COVID-19

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PHYSICS

Supposed room-temperature superconductors fail to convince critics

Independent experiments have been unable confirm the claims that, even outside controlled conditions, the materials are capable of transmitting electricity without energy loss

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INTERVIEW

David MacMillan: A catalyst for discoveries

Chemist won the Nobel Prize in 2021 for important innovations in the pharmaceutical industry

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ASTROPHYSICS

Artificial intelligence helps distinguish spiral galaxies from elliptical ones

AI algorithms classify 160,000 groups of billions of stars from images obtained by a Brazilian robotic telescope

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GEOLOGY

Rain, erosion, and dams have shaped the São Francisco river over the last 90,000 years

Previously winding and shallow, the river has straightened and deepened

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ECOLOGY

Humans prey on more species than 19 other large carnivores

Almost 15,000 vertebrates are impacted by human activity through hunting, fishing, or capture for breeding in captivity

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HEALTH

Early puberty

Maternal and paternal heritages play equal role in genetic disorder causing premature onset of puberty

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