Geography
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
By Redação
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
By Redação
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
By Redação
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
By Redação
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
By Redação
Astronomy

High-resolution moon
Researchers have produced the first detailed digital map of the Moon's entire surface
By Redação
Geography

Human activity alters river mouths
Amazon River delta is shrinking by 1 km2 per year because of siltation
By Redação
Environment

How to monitor forest fires
Data from NASA and INPE satellites confirm an increased number of fires in the Amazon
By Marcos Pivetta and Rafael Garcia
Geology

Why the Nile is so unchanging
The Nile has followed the same path in North Africa for almost 30 million years
By Redação
Environment

Forestry budgets
Researchers examine why some conservation areas receive more public funding than others
Archival science

Memories Revealed
The unpublished collections of Celso Furtado and Joaquim Nabuco recently donated to research institutions promise new revelations
Geography

Boundaries between the Amazon and the Cerrado
In the Brazilian states of Mato Grosso, Pará, Tocantins, and Goiás, some areas classified as Cerrado are, in fact, part of the Amazon
By Redação
Geography

The wandering North Pole
The North Magnetic Pole has been moving faster than expected from Canada toward Siberia, Russia, in recent years
By Redação
Ecology

The fragile DNA of sharks
Overfishing could further decrease the naturally low genetic diversity of some commercially valuable species
By Suzel Tunes
Photolab

Pre-Columbian Culture
Fragments of ceramic figures indicate that at the time there was a cultural connection between peoples across South America
By Redação
Sociology

Immigrants stimulate the economy in European countries
A study assessing immigration to Europe between 1985 and 2015 has concluded that immigrants have a positive effect on the continent's economy
By Redação
Remote Sensing

Groundwater seen from space
A new satellite system will soon resume collecting aquifer data from around the globe