Geography

GEOLOGY

Extinct rivers of the Northeast

Sedimentary rock layers indicate that waters descended from mountains in the region some 450 million years ago

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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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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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GEOLOGY

The future landscape of the northeast and the coastline

There will be more high areas, since the sedimentary basins are rising especially in these regions

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PALEONTOLOGY

The ice age in the brazilian pampas

Fossils such as a tibia of a giant sloth, which can measure 60 centimeters, catch the eye amongst the shells on Concheiros beach in the state of Rio Grande do Sul

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Geography

Asian metropolises under threat from the sea

Metropolises in Southeast Asia could suffer from rising sea levels caused by global warming

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History

The foundations of a nation

Researchers analyze movements opposed to Brazil's emancipation from Portugal, revisiting the process of establishing the Brazilian state and its relationship with Hispanic America

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ANTHROPOLOGY

Maps used to identify indigenous and quilombola lands

Historical cartography, participatory mapping, and other initiatives are crucial resources in the fight to demarcate territories

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RETROSPECT

The roots of hunger

Josué de Castro exposed the economic, social, and biological bases of chronic malnutrition

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Video

New kind of coral reef surprise researchers

Far from the coast, coraline Hills harbor a large diversity of fish that only exist there | 4'58

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RETROSPECT

The Amazon’s Treasure

In an eighteenth-century book, a Portuguese Jesuit shows empathy for Indigenous peoples and, as a naturalist, describes rivers, plants, and animals

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NOBEL PRIZE

The 2022 winners

Twelve individuals and two institutions were awarded the Nobel Prize this year

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URBANISM

Interactive atlas of Rio de Janeiro

The map of the city shows the geographical and urban transformations since 1500

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geography

The surprises of old maps

Navy collection brought from Portugal in 1808 reveals cartographers and little-known phenomena

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History

The foundations of a nation

Researchers analyze movements opposed to Brazil's emancipation from Portugal, revisiting the process of establishing the Brazilian state and its relationship with Hispanic America

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ARCHAEOLOGY

Dating indicates that skeleton found in Piauí is 9,600 years old

Nicknamed Zuzu, the individual was a contemporary of the oldest human groups in South America

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GEOLOGY

The Tonga megatsunami

Tonga tsunami in January may have been amplified by acoustic-gravity waves

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URBANISM

Interactive atlas of Rio de Janeiro

The map of the city shows the geographical and urban transformations since 1500

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BIOGEOGRAPHY

Water from the Amazon River separates Brazilian and Caribbean marine species

A sediment plume from the river penetrates thousands of kilometers into the Atlantic, home to its own fauna that differs to other regions of the ocean

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Geography

Coastal cities sinking

Several coastal cities are sinking faster than sea level rises

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History

Land grab in the USA in 1816

Historian uncovers case of land theft in early nineteenth century USA

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Paleoecology

Caribbean incursions

Studies back up the hypothesis that the Caribbean Sea flooded parts of the western Amazon between 23 and 10 million years ago

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Geophysics

Shifting sands

Studies suggest crescent-shaped dunes can move and interact in five different ways

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Cover

Geography of flavors

In the last two decades, Brazil has created 88 geographical indications for products such as coffee, cheese, and wine

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Biology

Rainforest marsupials

Study suggests opossums emerged in the Amazon about 40 million years ago

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geography

Sea level controls volcano activity

The sea level may control the activity of many volcanoes on the planet

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Environment

Fighting global warming

US academies of science propose a research program to study the feasibility of Earth cooling measures

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Interview

Jurandyr Ross: The three Brazils

The São Paulo geographer proposes an overview of the country’s different environmental, social, and economic realities

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Photolab

Ancient dunes

The sand dunes on the banks of the São Francisco River, the most extensive inland dunes in Brazil, began to form more than 20,000 years ago

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Genetics

Where Vikings went

Researchers analyzed the remains of 442 humans found in Viking cemeteries in Scotland, concluding that the Viking identity was not limited to people with Scandinavian genetic ancestry

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