Geography

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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COVID-19

Seismographs used to measure social distancing

Due to the social distancing measures adopted to contain the pandemic, seismographs in large cities registered a significant reduction in the waves generated by ground movement

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Technology

A drone that counts trees

Researchers from Brazil and the USA have developed a drone capable of flying autonomously through a forest and mapping the trees

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Record

In space and the deep sea

American geologist, oceanographer and former astronaut Kathy Sullivan, 68, is the first person to walk in space and to dive to the deepest point of the ocean

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Astronomy

High-resolution moon

Researchers have produced the first detailed digital map of the Moon's entire surface

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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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Paleoanthropology

Diaspora 2.5 million years ago

Chipped stone artifacts found in Jordan may be evidence of archaic humans leaving Africa 400,000 years earlier than previously thought

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GEOGRAPHY

The dance of the dunes

Researchers collect precise data on the movement of sand dunes in Lençóis Maranhenses

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Environment

How to monitor forest fires

Data from NASA and INPE satellites confirm an increased number of fires in the Amazon

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Geology

Why the Nile is so unchanging

The Nile has followed the same path in North Africa for almost 30 million years

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Environment

Hidden landscapes in the Pantanal

Researchers find a 1000 km2 lake hidden under aquatic plants on the plains of the Rio Negro

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Cover

Growth without destruction

Sustainable development of the Amazon will require changes in traditional agricultural methods and improvements to agroforestry resource extraction

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Cover

The rainforest

The Amazon carries water to other regions of Brazil and even other continents

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Environment

Forestry budgets

Researchers examine why some conservation areas receive more public funding than others

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