Marcos Pivetta and Rodrigo de Oliveira Andrade

COVER

When light bent

Observation of the 1919 solar eclipse from Brazil and Africa provided the first experimental proof of Albert Einstein’s theory of relativity

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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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Interview

Francis Halzen: In pursuit of neutrinos and cosmic rays

Lead scientist at IceCube observatory comments on the recent discovery of high-energy particles

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Physics

International meeting point

Instituto Principia will bring together researchers from across Brazil and abroad through projects with a maximum duration of six months

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Interview

José Antonio Marengo Orsini: A time of uncertainty

Climatologist says society can perceive climate change but has difficulty adopting adaptive measures

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GEOSCIENCES

The ruins of rare stones

The geology and paleontology collection at the National Museum contained 70,000 pieces, such as meteorites, unique pterosaurs, and mineral specimens from the Portuguese royal family

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INTERVIEW

Niède Guidon: “I’m going to open the Museum of Nature and then I will rest”

After four decades in the Serra da Capivara, the archaeologist confirms that she will leave Piauí after the opening of the new exhibition space

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NATURAL HISTORY

A new window on the sertão

The foundation created by archaeologist Niède Guidon is set to inaugurate its Museum of Nature in December at Serra da Capivara National Park in Piauí

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Archaeology

Prehistory in pieces

The skull of Luzia and a 2,800-year-old Egyptian mummy were among the more than 100,000 items in the archaeology and biological anthropology collections

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INTERVIEW

Robert Shelton: Partnership between giants

President of the GMT telescope explains why he joined with competitor TMT to secure funding from the National Science Foundation

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ARCHAEOLOGY

Occupation of primordial “Brazil”

Evidence suggests that hunter-gatherers inhabited all major regions of Brazil roughly 10,000 years ago

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Astronomy

Devouring stars

According to a survey, the Milky Way cannibalized eleven neighboring galaxies

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ASTRONOMY

The rocks that remained

An alternative model suggests that the asteroid belt originated from leftovers from the formation of the planets in the solar system

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INTERVIEW

José Roberto Postali Parra: The insect farmer

Entomologist defends the use of biological control to combat crop pests

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ASTROPHYSICS

Signs of new worlds

Gravitational waves could be used to detect exoplanets in close orbit around their parent star

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INTERVIEW

Robert Shelton: A partnership between giants

President of the GMT telescope explains why he joined together with competitor TMT to secure funding from the National Science Foundation

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INTERVIEW

José Goldemberg: From nuclear physics to ethanol

Researcher speaks of his major contributions to science

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ENVIRONMENT

Energy to change

Conference discusses the role of biofuels in fighting global warming

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ARCHAEOLOGY

The age of milk

Hunter-fisher-gatherers who lived in the coastal regions of Santa Catarina State 3,000 years ago breastfed children until 2 years of age

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COVER

More people in the rainforest

New archaeological sites and evidence of plant domestication support the idea that pre-Columbian Amazonia was densely populated

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physics

Half a century with ALS

Stephen Hawking may have been the longest-living patient with amyotrophic lateral sclerosis

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Physics

Hawking’s legacy

The British physicist showed black holes can emit radiation and shrink in size

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COSMOLOGY

The endless search

International researchers are constantly looking for lighter particles in the hope of finding dark matter

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INTERVIEW

Marcelo Viana: A difficult equation

The director of IMPA talks about Brazil's entry into the international elite of mathematics research, and math education problems in the country's schools

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Archaeology

Settlers and farmers

Ancestors of the Jê group lived in pit houses and cultivated cassava and beans in the Santa Catarina highlands a thousand years ago

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Neuroscience

Hunting circuits

Two neural pathways that originate in the brain’s amygdala control the aggressive behavior of predators

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Cover

The mechanisms of aging

Studies of living cells and organisms identify genetic and molecular phenomena associated with physical and mental decline

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ARCHAEOLOGY

Occupation of primordial “Brazil”

Evidence suggests that hunter-gatherers inhabited all major regions of Brazil roughly 10,000 years ago

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physics

Devouring stars

Survey shows that Milky Way cannibalized eleven neighboring galaxies

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physics

When light attracts light

Brazilian researchers show that two photons can couple, exhibiting similar behavior to electron pairs in superconductors

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