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A transistor that simulates some of the functions of neurons has been invented based on experiments and models developed by researchers at the Federal University of São Carlos (UFSCar) in São Paulo State, Brazil, Würzburg University in Germany, and the University of South Carolina in the United States. The device, which has micrometric as well as nanometric parts, can see light, count, and store information in its own structure, dispensing with the need for a complementary memory unit. It [...]

Like ants and termites, several species of stingless bees have specialized guards or soldiers to defend their colonies from attacks by natural enemies. The differentiation of these guardian bees, which are more robust, larger, and in some cases differently colored compared with the more numerous worker bees, evolved in the last 25 million years and coincided with the appearance of parasitic “robber” bees, which represent a major threat to many stingless bee species. These discoveries were [...]

A cosmic phenomenon on a colossal scale, resulting from the acceleration of a gas cloud by a black hole and its reacceleration by the shock waves from the merging of two galaxy clusters, has been observed, described and interpreted by an international collaboration of astronomers that included three Brazilians: Felipe Andrade-Santos, Vinicius Moris Placco, and Rafael Miloni Santucci. All three, together with colleagues from other countries, are co-authors of the article “The case for [...]