Biology

Medicine

Aggressive variant of the Oropouche virus circulating in Brazil

New strain multiplies rapidly and could facilitate transmission

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Interview

Adalberto Val: A fascination for the fish of the Amazon

The biologist from São Paulo discovered the adaptation mechanisms of the region's species to variations in oxygen and temperature in the rivers

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Botany

Thornless cactus lives in a burrow

New species of cactus has no thorns and grows buried among quartz

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Photolab

Farmers

Photograph captures the social order of an anthill

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ECOLOGY

A bacterial coating that protects amphibians

Sensitive to climate change and pollutants, frogs and toads resist toxins with the help of skin microbiota

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Biodiversity

Almost 2,500 species face extinction in Brazil

Almost 2,500 species of animals and plants at risk of extinction in Brazil

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Biology

Air pollution harms pollinators more than pests

Air pollution harms pollinators more than pests

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Interview

Eliza Freire: Lizards, snakes, and prejudice

In spaces once occupied exclusively by men, Eliza Freire identified new species and uncovered new knowledge of the diversity of reptiles in Northeast Brazil

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Retrospect

Glass negatives depict science in the early twentieth century

Botanical Garden of Rio de Janeiro and other institutions preserve rare photographic collections

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BIOLOGY

Amazonian fish sensitive to intense heat

Higher temperatures damage the tambaqui's DNA and liver and worsen the effects of pesticides

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ECOLOGY

Invasive species in mangroves of São Paulo

Fast-growing invasive plant spreading through mangroves in the Santos estuary

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Research Itineraries

At the right time

Syrian paleontologist Wafa Adel Alhalabi arrived in Brazil as a refugee, having fled the war in her home country. Now at USP, Ribeirão Preto campus, she is studying fossils from her homeland

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BIOTECHNOLOGY

Transgenic goats, rabbits, and cows produce drugs for human use

Transgenic goats, rabbits, and cows produce drugs for human use

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Photolab

Fish watching

Biologist highlights the importance of ecotourism to the preservation of a river ecosystem

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Environmental management

Disfigured coastline

From the north to the south of Brazil, coastal protection projects seek to curb rising sea levels and beach erosion, usually with little success

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PUBLIC POLICY

Report identifies 476 invasive species in Brazil

Invasive plant and animal species threaten biodiversity and cause damage

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Innovation

Fireflies of the plant world

Bioluminescent plant that emits green light in the dark goes on sale in the USA

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Digital

Virtual tour of Darwin’s library

British naturalist Charles Darwin’s library is now available online

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Zoology

Wildcats from the Andes and Central America differ to those found in Brazil

Complex that includes Leopardus tigrinus and L. guttulus gains new species, L. pardinoides, all in danger of extinction

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Retrospect

Amazement and horror in nineteenth-century Rio

Paintings by two artists who accompanied Darwin on the Beagle voyage recorded the exuberance of nature and social contrasts

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Agronomy

New techniques for determining soil identities

Land mapping with sensors, drones, and satellites improves agricultural productivity and identifies erosion and water or nutrient loss

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Cover

Travel itinerary

The Tumucumaque Mountains National Park (PNMT) is isolated from urban areas, leaving the forest unaltered by human activity

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Cover

Amazonian Giants

Expedition investigates the scientific enigma of 80-meter-tall trees in Amapá

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Photolab

Nest watch

Biologist mimics real-life situations near nests to see how thrushes react while caring for their young

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Oceanography

Greater marine protection needed

Document highlights the sea’s importance to the economy and climate regulation

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Citizen science

App for studying pollinators

App used to record visits to flowers by bees, flies, and hummingbirds

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Zoology

Unique fauna at Pico da Neblina

Scientists discover two new families of frogs at Pico da Neblina

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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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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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