Maria Guimarães

Epidemiology

Bacteria that causes leprosy was present in the Americas before the Europeans

Mycobacterium leprae, the main species, was brought over by the Europeans, but M. lepromatosis had already been on the continent for at least 1,000 years

By

Interview

Regina Macedo: Biologist reformulates view on bird behavior

São Paulo native from UnB who helped revise concepts about sexual selection in the tropics and cooperative breeding has dedicated herself to another passion since last year: painting

By and

Public health

Genome diversity could help SUS

Brazil’s national health system (SUS) could treat diseases more efficiently by making use of databases on ancestry and the wide variety embedded in Brazilian DNA

By

Genomics

Brazilians are even more mixed-race than you think

New DNA sequencing of 2,723 people reveals greater Indigenous and African ancestry and highlights violence that marked the formation of the Brazilian population

By

Interview

Christiane Taubira: An Amazonian with global reach

After serving as a member of parliament and minister in France, the French-Guyanese economist is preparing to contribute to COP30 with a study on the diversity of local populations

By

interview

Suzana Nunes: Female chemical engineer lives in Saudi Arabia

Brazilian scientist develops membranes that act as sophisticated filters, while also working on the permeability of science across genders and countries

By

ARCHAEOLOGY

The Amazon’s ancient cornfields

Archaeological sites in Bolivia reveal traces of large-scale corn farming that once sustained a dense human population—and may have even played a role in domesticating ducks

By

INTERVIEW

Ivo Karmann: Geologist of the void

In good humor and with a strong team spirit, researcher tells of the beginnings and evolution of scientific investigations into caves in Brazil

By

CHRONOBIOLOGY

Biological clock of cyanobacteria, which live for one day, predicts the arrival of winter

Result surprises scientists, leading them to rethink the mechanisms and evolutionary importance of adjusting to natural rhythms

By

ZOOLOGY

Temperature affects sensory system development in trout

Temperature affects sensory system development in trout

By

Environment

Belo Monte Dam and drought cause the Volta Grande do Xingu region to dry up

Monitoring indicates that low water flow is preventing fish from reproducing and impeding the way of life of Indigenous people and riverside communities

By

Interview

Antoinette WinklerPrins: From the Amazon to research funding

Deputy division director of the US National Science Foundation was in São Paulo to discuss potential collaborations with Brazilians

By and

Climate change

Bacteria in Amazon tree trunks are capable of absorbing methane

Study by international group indicates that the phenomenon occurs in non-flooded areas

By

PHYSIOLOGY

When soccer meets science

Research on recent World Cups begins to bridge the gap between sports and science

By

Cover

Travel itinerary

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

By

ARCHAEOGENETICS

Did diseases kill the Neanderthals?

Sequences detected in the genome of the extinct species represent the oldest documented human viral infections

By

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

By

Zoology

The explosive evolution of snakes

A combination of genetic, ecological, and morphological data reveals the secrets of success behind these legless reptiles

By

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

By

Cover

Travel itinerary

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

By

Cover

Amazonian Giants

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

By

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

By

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

By

Ecology

Parasites that turn spiders into zombies

Infected by fungi, invertebrates climb higher to die

By

INTERVIEW

David MacMillan: A catalyst for discoveries

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

By

EPIDEMIOLOGY

Brazilian spotted fever not a threat

Combating the tick-borne disease requires an understanding of its underlying ecology and effective clinical diagnostics

By

Cover

The era of whole genome sequencing

New techniques are changing the way genetic material is understood and promising to transform our understanding of diseases, human genetic diversity, food production, and evolutionary processes

By

GENOMICS

Primate genetic material could contribute to precision medicine

International project is sequencing the DNA of more than 200 species in pursuit of tools to predict human propensity to diseases

By

INTERVIEW

Marta Maria Azevedo: In defense of native peoples

Brazilian demographer and anthropologist Marta Azevedo pioneered in identifying the phenomenon of population recovery among Brazil’s indigenous peoples

By and

SCIENCE COMMUNICATION

Ig Nobel Prize for constipated scorpions

Satire of the biggest scientific award in the world selects the work of a pair from the University of São Paulo in the Biology category

By