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In the past three decades, almost 4,000 planet-like objects have been discovered orbiting isolated stars outside the Solar System (exoplanets). Beginning in 2011, it was possible to use NASA's Kepler Space Telescope to observe the first exoplanets in orbit around young binary systems of two live stars with hydrogen still burning in their core. Brazilian astronomers have now found the first evidence of the existence of an exoplanet orbiting an older or more evolved binary in which one of the [...]

Brazilian researchers may have discovered why Africanized honeybees are so aggressive. The scientists detected higher levels of certain chemical substances in the brains of Africanized honeybees than in gentler strains of honeybees bred by beekeepers. According to a study published in Journal of Proteome Research, the chemical substances in question may trigger irascible behavior by normally placid bees. The same compounds had been detected in the brains of flies and mice, where they appeared [...]

A study performed by Brazilian researchers and published in the International Journal of Biometeorology showed that falling temperatures may be accompanied by rising numbers of deaths from stroke, especially among people over 65. The authors also found that in the case of older people, the incidence of stroke associated with colder weather was higher among women. With the support from the São Paulo Research Foundation - FAPESP, researchers at the University of São Paulo (USP) and the [...]

Brasilestes stardusti is the name given to the oldest known mammal found in Brazil. It lived in what is now the northwest of São Paulo State at the end of the Mesozoic Era between 87 million and 70 million years ago. It is the only Brazilian mammal known to have coexisted with the dinosaurs. The discovery of Brasilestes was announced on May 30, 2018, by a team led by Max Langer, a professor at the University of São Paulo's Ribeirão Preto School of Philosophy, Science & Letters [...]

An enzyme identified in Saccharomyces cerevisiae, commonly known as brewer's or baker's yeast, has passed in vitro trials, demonstrating its capacity to kill acute lymphoblastic leukemia (ALL) cells. Characterized by malignant alterations in the blood-forming stem cells in the bone marrow, ALL is the most common form of childhood cancer. Findings from the research project are described by scientists at the University of São Paulo and São Paulo State University in an article published in the [...]

A paper by Brazilian researchers published in the journal Scientific Reports describes a study showing that a subgroup of olfactory neurons in the nasal cavity express a cellular receptor specializing in the transport of lipid molecules. Known as CD36, this membrane receptor is usually intensely expressed in fatty tissue, where it regulates lipid metabolism. It also plays a well-known role in the immune system, where it is required for phagocytosis of potentially harmful molecules by [...]