Science

Heritage

Likely origin of the fire

Report names overloaded air-conditioning system and electrical failures as cause of National Museum fire

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Physics

Particle super-cooler

São Carlos research group develops simpler method for producing ultracold molecules

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Cosmology

Visibility limit

International radio telescope array produces the first image of a black hole

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Naval engineering 

Renewing the fleet

The Brazilian Navy launches the Riachuelo, the first of five submarines that will set a new technological benchmark for the national naval industry

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Astronomy

Unusual Stars

Researchers puzzled by recent discoveries of stars with variable brightness

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Oceanography

Sources of methane

Two thousand craters releasing the greenhouse gas found off the Brazilian coast

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Oncology

Doubling the effort against cancer

Hospitals such as ICESP and A.C. Camargo combine basic research with applied research in the search for better treatments for tumors

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HEALTH

Early-term births on the rise

In 2015, 40% of babies were born before reaching biological maturity, partly because of elective cesarean sections

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Astronautics

The private conquest of the Cosmos

A capsule of the company SpaceX flies to the International Space Station and may give the United States the capacity to put humans in orbit

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Zoology

The origin of perching birds

A group representing more than 60% of bird species originated in Australia 47 million years ago, study finds

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Zoology

The Alta Floresta titi

A new species of monkey is discovered in northern Mato Grosso State

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Animal nutrition

A diet of chicken and corn

Studies find that the majority of dog food in Brazil is based on a less-than-ideal formula of these two ingredients

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Geology

New copper finds north of Carajás

Survey reveals potentially vast reserves of the metal in the Bacajá region

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GEOGRAPHY

The young Amazon

Central region of the rainforest may have formed just 45,000 years ago as wetlands receded

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Physical chemistry 

The periodic table at a crossroads

After 150 years, the diagram that arranges the chemical elements based on their similar properties faces difficulties for further growth

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INTERVIEW

Peter Goddard: The risks of knowledge

British physicist Peter Goddard, former director of the Institute for Advanced Study at Princeton, says innovative research must be unpredictable

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Heritage

Inside the ruins of the National Museum

Five months after the fire, a visit to the rubble shows what remains of São Cristóvão Palace

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Evolution

The origin of the butterfly

Studies based on gene and fossil analysis estimate that butterflies emerged between 120 and 100 million years ago

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Public health

Emotions weigh heavy on the heart

A study of 15,000 people in Brazil indicates an association between psychiatric problems and cardiovascular diseases

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Physiology

An enemy unknown

Brazilian researchers find that fasting causes growth hormone to activate neurons that induce hunger and undermine weight loss

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Astronomy

A world on the edge of the solar system

Astronomers gather more evidence of another planet beyond Neptune

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Food science 

Microorganisms of flavor

Study identifies the bacteria that give 11 types of Brazilian artisan cheese their distinctive traits

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Paleontology

The horned crocodile of Acre

New fossil belonged to the 31st known species of a group of reptiles that lived in South America between 23 million and 5 million years ago

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Physico-chemistry

Hidden strokes of Portinari

Tests show how the artist produced his artwork and may be useful in confirming the painter of a piece found in his former home

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Archaeology

The water people

For 1,000 years, indigenous people in South America lived in stilt-house villages in the lowlands of present-day Maranhão

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Archaeogenetics

Tracking the ancestry of corn

DNA reveals a complex domestication history largely set in Mexico and the Amazon

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Meteorology

From the earth to the sky

Researchers to use German aircraft to investigate how nanoparticles produce storms in the Amazon

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Interview

Alexandre Antonelli: At the forefront of science in royal gardens

In February, Brazilian biologist will take the role of scientific director of Kew Gardens in the United Kingdom

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MEDICINE

Transplantation to treat infertility

Physicians in São Paulo announce the world’s first successful uterus transplant from a deceased donor

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Psychiatry

The other side of ayahuasca

Research teams from Natal and Ribeirão Preto conduct initial tests on antidepressant properties of ayahuasca tea made of leaves and bark from the Amazon

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