Articles (Page 1) | Meridiano

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The Sun Is 'Glitching.' Scientists Investigated and Solved a Cosmic Mystery

(404 Media / 2026-03-04 00:01)

Scientists have used a 40-year dataset from the Birmingham Solar-Oscillations Network (BiSON) to study the Sun's internal vibrations during its quiet solar minimum periods. Their analysis revealed a stronger acoustic "glitch" during the 2008-2009 minimum, indicating subtle structural changes, like a slightly hotter outer layer, during that time of low magnetic activity.

The findings confirm that the Sun does not return to an identical state after each 11-year cycle, with its activity varying over decades and centuries. This research provides new insights into the Sun's internal dynamics and is a first step in understanding the long-term changes in how the Sun generates its magnetic field.

The main topics covered are solar cycles and minima, asteroseismology (studying stellar interiors via oscillations), long-term solar behavior changes, and the analysis of specific acoustic glitches within the Sun.

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Com conflito no Irã, Europa será a região mais afetada pela falta de petróleo, aponta professora da Uerj

(Brasil de Fato / 2026-03-04 00:05)

Resumo objetivo:
O fechamento do Estreito de Ormuz após ataques ao Irã elevou o preço do petróleo, impactando principalmente a Europa. A especialista Clarissa Forner aponta que, embora os EUA tenham relativa segurança energética devido ao xisto, uma escalada do conflito pode afetar setores como alimentos e consumo, gerando problemas econômicos internos e para aliados.

Principais tópicos abordados:
1. Impacto geopolítico e econômico do fechamento do Estreito de Ormuz no preço do petróleo.
2. Análise das contradições da política externa de Trump, incluindo gasto militar e o distanciamento do "America First".
3. Cenário político interno dos EUA, com as eleições de meio período como possível contrapeso às ações de Trump.
4. Remilitarização europeia e tensões na OTAN, questionadas pela retórica de Trump.

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US commerce secretary to testify before Congress about Epstein ties

(BBC News / 2026-03-04 00:11)

Summary: US Commerce Secretary Howard Lutnick has voluntarily agreed to testify before the House Oversight Committee regarding his past association with Jeffrey Epstein. This follows the release of documents showing he visited Epstein's private island in 2012, despite previously stating he had severed ties years earlier, which prompted bipartisan calls for his resignation. The investigation has also recently included testimonies from Bill and Hillary Clinton and is expanding to seek interviews with other high-profile individuals.

Main Topics Covered: 1. Howard Lutnick's agreement to testify before Congress about his ties to Jeffrey Epstein. 2. The context of the congressional investigation, including recent testimonies from the Clintons. 3. Discrepancies between Lutnick's past statements and documented contact with Epstein. 4. The expansion of the inquiry to include other notable figures.

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Dino proíbe saques em espécie de emendas parlamentares

(Brasil de Fato / 2026-03-04 00:21)

O ministro Flávio Dino, do STF, proibiu os saques em espécie de recursos oriundos de emendas parlamentares, determinando que os repasses sejam feitos exclusivamente por transferências eletrônicas para garantir transparência e rastreabilidade. A decisão, que também exige que bancos adaptem seus sistemas e que o Banco Central regulamente a matéria em 60 dias, visa coibir inconsistências no fluxo desses recursos. Os principais tópicos abordados são a proibição de saques em espécie, as medidas para assegurar transparência no uso das emendas parlamentares e as determinações aos bancos e ao Banco Central para implementar os controles.

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Consumo das famílias cresceu 1,3% no ano passado, frente a aumento de 5,1% em 2024: ‘População sente como um freio’

(Brasil de Fato / 2026-03-04 00:24)

Resumo objetivo: O IBGE divulgou que o PIB brasileiro cresceu 2,3% em 2025, marcando o quinto ano consecutivo de expansão, porém em ritmo menor que em 2024. O crescimento foi puxado principalmente pelo agronegócio (mais de 11%), enquanto o consumo das famílias teve alta modesta de apenas 1,3%.

Principais tópicos abordados: 1. Desempenho macroeconômico: Crescimento do PIB em 2025, sua desaceleração em relação a 2024 e a composição do crescimento (agronegócio x consumo familiar). 2. Análise crítica da estrutura econômica: Alertas sobre desindustrialização, excesso de dependência de commodities (agronegócio e minério) e os efeitos negativos dos juros altos e da especulação financeira para o desenvolvimento. 3. Impactos externos e política interna: Como a guerra no Oriente Médio afeta os preços internacionais do petróleo e a crítica à Política de Paridade de Importação (PPI), que impede o Brasil de se blindar dessas oscilações especulativas.

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Agressão de EUA e Israel se intensifica e atinge 24 das 31 províncias do Irã; 787 pessoas foram mortas

(Brasil de Fato / 2026-03-04 00:28)

Os principais pontos da notícia são a intensificação dos ataques militares dos EUA e de Israel contra o Irã, que causaram centenas de mortes civis, incluindo um ataque a uma escola, e a retaliação iraniana contra bases e instalações em vários países do Oriente Médio. Os principais tópicos abordados incluem: o conflito militar e suas vítimas civis, a pressão internacional por investigações, a escalada regional com ataques no Líbano e o controle estratégico do Estreito de Ormuz pelo Irã, com a ameaça de intervenção naval dos EUA para garantir o fluxo de petróleo.

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Trump não terá uma vitória rápida e fácil contra o Irã

(Jacobin Brasil / 2026-03-04 00:28)

Resumo objetivo:
Os ataques dos EUA e Israel buscaram obter iniciativa aérea e desorganizar o comando iraniano, visando criar condições para operações futuras. Em resposta, o Irã adotou uma estratégia de ataques amplos e repetidos contra estados do Golfo, causando danos, detritos e impacto psicológico na população civil, elevando assim os custos políticos e econômicos para os aliados estadunidenses. O momento do ataque foi influenciado por uma armadilha de credibilidade militar e pressão israelense, enquanto a crise interna iraniana atuou como um fator facilitador, mas não determinante, para a ação ocidental.

Principais tópicos abordados:
1. Balanço militar inicial dos ataques e da resposta iraniana.
2. Estratégia e impactos da campanha iraniana nos estados do Golfo.
3. Fatores que determinaram o momento do ataque (credibilidade, pressão israelense e diplomacia).
4. Influência da crise interna iraniana na decisão dos EUA e Israel.

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India’s beauty and personal care market set to grow to $39 billion in FY30: Report

(Tech-Economic Times / 2026-03-04 00:30)

India's beauty and personal care market is projected to grow from $27 billion in FY25 to $39 billion by FY30. A major driver is the rapid expansion of online sales, with quick commerce expected to grow from 14% to 30% of online BPC sales by 2030, and platforms like Nykaa leading the market.

Gen Z consumers are a primary force, accounting for 45% of total BPC spending and fueling trends like ingredient-focused and Korean beauty products. The market is also seeing a shift towards self-care and premiumization, moving beyond cosmetic fixes to long-term skin health.

New-age digital brands are rapidly innovating to meet diverse consumer needs, while direct-to-consumer brands are catering to niche segments like curly hair and men's grooming. Increased consumer awareness and influencer-driven content commerce are key factors shaping demand and purchasing behavior.

Main Topics: Market growth projections, online and quick commerce expansion, Gen Z consumer influence, premiumization and ingredient trends (e.g., K-Beauty), rise of digital and niche D2C brands.

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Centre will stick to social media content takedown deadlines, say officials

(Tech-Economic Times / 2026-03-04 00:30)

The Indian government will not relax new, stricter deadlines for social media platforms to remove harmful content, prioritizing citizen protection. The rules, which took effect in February, significantly shorten takedown times, including requiring removal of non-consensual intimate imagery within two hours and addressing other unlawful content within three hours.

While officials are firm on the timelines, the Ministry of Electronics and IT remains open to discussions with platforms about the technical aspects of compliance. Social media companies have expressed concerns about the operational feasibility of the accelerated deadlines, but the government asserts they have the proven capability to meet them.

The main topics covered are the government's stance on stricter content removal rules, the specific new compliance timelines, and the ongoing dialogue between the government and social media intermediaries regarding implementation challenges.

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Underused GPUs raise questions about IndiaAI capacity build-out

(Tech-Economic Times / 2026-03-04 00:31)

The IndiaAI Mission's Compute Portal, which provides subsidized GPU access to AI researchers and startups, is experiencing very low utilization rates. Despite having over 33,000 GPUs committed by cloud service providers, only about 22% are currently being used by end customers.

Key reasons for the poor utilization include a slow allocation process by IndiaAI and financial or procedural delays from end-user companies, such as government entities. This has led some cloud providers to sell their GPU capacity on the open market where they can get better prices.

The main topics covered are the underutilization of critical AI compute infrastructure, the operational and financial challenges within the allocation model, and the specific bottlenecks caused by both administrative delays and end-user constraints.

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Why AI startups are selling the same equity at two different prices

(TechCrunch / 2026-03-04 00:31)

AI startups and their lead venture capital firms are employing a novel, two-tiered valuation structure within a single funding round. This allows a portion of the equity to be sold at a lower price to the lead investor, while a larger "headline" valuation—often over $1 billion—is set for other participants.

The primary goal is to manufacture a perception of market dominance and unicorn status, which helps scare off competitors, attract talent, and signal strength to customers. However, critics view the tactic as a symptom of a hyper-competitive, bubble-like market that distorts true company value and sets a high bar for future fundraising.

The main topics covered are venture capital funding strategies, startup valuation mechanisms, and the competitive dynamics within the AI investment landscape.

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TikTok won't protect DMs with controversial privacy tech, saying it would put users at risk

(BBC News / 2026-03-04 00:34)

TikTok has stated it will not implement end-to-end encryption (E2EE) for direct messages, arguing that the technology would hinder its ability to protect users—particularly young people—by preventing safety teams and law enforcement from accessing harmful content when necessary. This stance contrasts with many rival platforms that use E2EE to prioritize user privacy, and it occurs amid ongoing scrutiny of TikTok's data practices due to its Chinese ownership. The decision has drawn support from child protection advocates but places TikTok at odds with global privacy trends that favor encrypted communications.

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Ethiopia experiments with 'smart' police stations that have no officers

(BBC News / 2026-03-04 00:40)

Summary: Ethiopia has launched a pilot "smart" police station in Addis Ababa, which operates without on-site officers. Citizens report incidents via tablets that connect them to remote officers, aiming to increase police access and efficiency as part of a broader national digital transformation strategy called Digital Ethiopia 2030. While supporters highlight reduced paperwork and improved services, concerns remain about digital literacy gaps, privacy, and the risk of excluding older and rural populations with limited internet access.

Main Topics Covered: 1. The launch and operation of Ethiopia's unmanned "smart" police station. 2. The initiative's role within the national Digital Ethiopia 2030 strategy for digitizing public services. 3. The benefits (efficiency, accessibility) and challenges (digital divide, privacy, exclusion) of such digital reforms.

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Proposta de recapitalização do BRB é aprovada na CLDF

(Brasil de Fato / 2026-03-04 00:46)

Resumo objetivo:
A Câmara Legislativa do DF aprovou, por 14 votos a 10, um projeto do GDF que autoriza o uso de imóveis públicos como garantia para capitalizar o BRB, além de permitir operações de crédito de até R$ 6,6 bilhões e a criação de fundos imobiliários. A proposta enfrentou resistência de parlamentares da oposição, que criticaram a falta de transparência, a ausência de avaliações prévias dos bens e a eficácia da medida para resolver os problemas financeiros do banco. O processo incluiu a rejeição de um parecer negativo da CCJ e a apresentação de emendas, como a retirada de imóveis da Polícia Militar da lista de garantias.

Principais tópicos abordados:
1. Aprovação do PL que permite usar imóveis públicos como garantia para capitalizar o BRB.
2. Críticas da oposição sobre falta de transparência e questionamentos sobre a eficácia da medida.
3. Processo legislativo, incluindo pareceres, emendas e a reunião com o presidente do banco.

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Australian girl, 8, killed in snowmobile accident in Japan

(BBC News / 2026-03-04 00:53)

Summary: An eight-year-old Australian girl, Chloe Jeffries, was killed in a snowmobile accident at Japan's Hakuba Valley ski resort after the vehicle overturned and trapped her. The tour operator has suspended operations pending a safety review, and police are investigating. This incident marks the fourth Australian death at a Japanese ski resort this year, following other separate fatal accidents involving skiers and a ski lift.

Main Topics Covered: 1. The details of the fatal snowmobile accident involving a young Australian tourist. 2. The response from the tour operator and authorities. 3. The context of other recent Australian fatalities at Japanese ski resorts.