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The Brazilian Director Who's Up for Multiple Oscars

The New Yorker

Kleber Mendonça Filho wants his films to reclaim lost history. For Kleber Mendonça Filho, filmmaking is an act of both provocation and preservation. Mendonça was born in 1968, in the early years of a ruthless military dictatorship--a time when cinema, like much else, was harshly constrained. His mother, Joselice Jucá, was a historian who studied Brazil's abolitionist movement, and she taught him that filling gaps in the cultural memory was a way to expose concealed truths. His relationship with film is inextricably linked with his home town, Recife--a port city where attractive beaches and high-rise developments coexist with sprawling favelas and rampant crime. In his youth, Mendonça was fascinated by the city's grand cinema palaces. He carried a Super 8 camera to the tops of marquees and shot dizzying images; he spent hours in projection booths, learning the mechanics of how films reached the screen. Over time, Mendonça watched those theatres fall into decline, an experience that he likened to being aboard a ship as it wrecked. But even as Recife lost its allure, he made the city a fixture of his films--a way of vindicating its place in history. His first narrative feature, "Neighboring Sounds," takes place on a street where he lived as a child, a setting that he spent years documenting. Later, he made "Pictures of Ghosts," a documentary about Recife told largely through its cinemas.


Teeny tiny orange toadlet found in Brazil

Popular Science

A unique mating call led biologists to this newly discovered pint-sized amphibian. 'Brachycephalus lulai' is a tiny pumpkin toadlet measuring less than 14 millimeters in length. It is sitting on a pencil tip for scale. Breakthroughs, discoveries, and DIY tips sent every weekday. A new pumpkin toadlet species was recently discovered in the mountains of southern Brazil. is just over one centimeter (only 0.39 inches) long and the size of a pencil tip.


A Taxonomy of Pix Fraud in Brazil: Attack Methodologies, AI-Driven Amplification, and Defensive Strategies

Pizzolato, Glener Lanes, Lopes, Brenda Medeiros, Schepke, Claudio, Kreutz, Diego

arXiv.org Artificial Intelligence

This work presents a review of attack methodologies targeting Pix, the instant payment system launched by the Central Bank of Brazil in 2020. The study aims to identify and classify the main types of fraud affecting users and financial institutions, highlighting the evolution and increasing sophistication of these techniques. The methodology combines a structured literature review with exploratory interviews conducted with professionals from the banking sector. The results show that fraud schemes have evolved from purely social engineering approaches to hybrid strategies that integrate human manipulation with technical exploitation. The study concludes that security measures must advance at the same pace as the growing complexity of attack methodologies, with particular emphasis on adaptive defenses and continuous user awareness.


The Download: the risk of falling space debris, and how to debunk a conspiracy theory

MIT Technology Review

What is the chance your plane will be hit by space debris? The risk of flights being hit by space junk is still small, but it's growing. About three pieces of old space equipment --used rockets and defunct satellites--fall into Earth's atmosphere every day, according to estimates by the European Space Agency. By the mid-2030s, there may be dozens thanks to the rise of megaconstellations in orbit. So far, space debris hasn't injured anybody--in the air or on the ground. But multiple close calls have been reported in recent years.


To unearth their past, Amazonian people turn to 'a language white men understand'

Science

The site, a few kilometers from her own hut in Ipatsé, a Kuikuro village in the Xingu Indigenous territory, was once the backyard of her great-grandparents' house. As she scrapes the brown earth with a trowel, she soon spots a black ceramic shard. It is only about the size of her palm, and this is her first day ever on an archaeological excavation. But she immediately recognizes what the object once was. "It's an alato," she says, showing the piece to a group of archaeologists and other Kuikuro who have gathered to watch the excavation in the village of Anitahagu. An alato, Yamána explains, is a large pan used to cook beiju, a white flatbread made with yucca flour that's eaten almost every day in her village. Her grandmother still has one in the backyard fire pit where she prepares most meals, just as countless Kuikuro women did before her. This alato likely belonged to her great-grandmother on her mother's side.


The 5.30 orange juice that tells the story of why supermarket prices are sky high

BBC News

The £5.30 orange juice that tells the story of why supermarket prices are sky high There has been more than a bitter twang in the glasses at British breakfast tables. Only five years ago, a typical supermarket own-label carton of orange juice could be bought for 76p for 1 litre. One colleague was outraged to be sent a bill for £9 for a glass of hangover-busting orange juice and lemonade at an unassuming little restaurant in Kent. Asked why so much, she was told that the orange juice - albeit freshly squeezed - accounted for £5.30 of the price. Yet as costs have surged, the taste is changing too, with certain manufacturers substituting oranges for mandarins to cut costs.


Generative AI as a catalyst for democratic Innovation: Enhancing citizen engagement in participatory budgeting

Sousa, Italo Alberto do Nascimento, Machado, Jorge, Vaz, Jose Carlos

arXiv.org Artificial Intelligence

This research examines the role of Generative Artificial Intelligence (AI) in enhancing citizen engagement in participatory budgeting. In response to challenges like declining civic participation and increased societal polarization, the study explores how online political participation can strengthen democracy and promote social equity. By integrating Generative AI into public consultation platforms, the research aims to improve citizen proposal formulation and foster effective dialogue between citizens and government. It assesses the capacities governments need to implement AI-enhanced participatory tools, considering technological dependencies and vulnerabilities. Analyzing technological structures, actors, interests, and strategies, the study contributes to understanding how technological advancements can reshape participatory institutions to better facilitate citizen involvement. Ultimately, the research highlights how Generative AI can transform participatory institutions, promoting inclusive, democratic engagement and empowering citizens.


Playpen: An Environment for Exploring Learning Through Conversational Interaction

Horst, Nicola, Mazzaccara, Davide, Schmidt, Antonia, Sullivan, Michael, Momentè, Filippo, Franceschetti, Luca, Sadler, Philipp, Hakimov, Sherzod, Testoni, Alberto, Bernardi, Raffaella, Fernández, Raquel, Koller, Alexander, Lemon, Oliver, Schlangen, David, Giulianelli, Mario, Suglia, Alessandro

arXiv.org Artificial Intelligence

Interaction between learner and feedback-giver has come into focus recently for post-training of Large Language Models (LLMs), through the use of reward models that judge the appropriateness of a model's response. In this paper, we investigate whether Dialogue Games -- goal-directed and rule-governed activities driven predominantly by verbal actions -- can also serve as a source of feedback signals for learning. We introduce Playpen, an environment for off- and online learning through Dialogue Game self-play, and investigate a representative set of post-training methods: supervised fine-tuning; direct alignment (DPO); and reinforcement learning with GRPO. We experiment with post-training a small LLM (Llama-3.1-8B-Instruct), evaluating performance on unseen instances of training games as well as unseen games, and on standard benchmarks. We find that imitation learning through SFT improves performance on unseen instances, but negatively impacts other skills, while interactive learning with GRPO shows balanced improvements without loss of skills. We release the framework and the baseline training setups to foster research in the promising new direction of learning in (synthetic) interaction.


The NFL Goes MrBeast Mode

WIRED

WIRED went to Brazil for YouTube's first live NFL broadcast. It was helmed by the platform's biggest influencers as the league expands its quest for global domination. Kay Adams, Deestroying, haleyybaylee, and Cam Newton at YouTube's first live NFL broadcast. The first international game of the National Football League season, a Friday-night tilt between the Kansas City Chiefs and Los Angeles Chargers in São Paulo, is celebrated on the ground by the usual pomp and circumstance. There are photo booths and merch tents catering to local fans, samba dancers in feathered head-pieces entertaining American die-hards traveling across the equator, and a press conference where Chiefs quarterback Patrick Mahomes has to backtrack after calling association football (that is, the kind that is still most popular in Brazil, and the rest of the word) "soccer."


Colombian court rules Meta was wrong to bar porn star's Instagram account

BBC News

Colombian court rules Meta was wrong to bar porn star's Instagram account Colombia's highest court has ruled that Meta violated a porn star's right to freedom of expression when it deleted her Instagram account. The South American nation's Constitutional Court said on Friday that the tech firm had removed Esperanza Gómez's account without a clear and transparent justification and without offering similar treatment to other, similar accounts. The 45-year-old, whose account had more than five million followers, is one of Colombia's best known adult content actresses. Meta argued in the case that she had violated its rules on nudity. The company, which also owns Facebook and WhatsApp, did not immediately react to the ruling.