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Cuba is on the brink of transforming its energy landscape with a bold plan to invest $8bn in renewable energy, which could reduce its reliance on fossil fuels and pave the way for energy independence from the US. The proposal, put forth by the Common Wealth thinktank's Transition Security Project (TSP), suggests that this investment could cover 93.4% of Cuba's electricity generation needs.The US has imposed a crippling energy blockade on Cuba, severely limiting the island nation's access to oil. Since January, Cuba has received only one shipment of oil, from Russia, and its national electric grid has collapsed, leading to repeated blackouts and widespread disruptions.The TSP analysis outlines four different scenarios for Cuba's transition to renewable energy, with costs ranging from $5bn to $19.2bn. The most ambitious proposal would see three-quarters of electricity generation provided by solar power, with wind, hydropower, and bioenergy making up the remainder.The report argues that electricity costs would decrease in every renewable investment scenario, with the cost per unit of energy falling from 14.3¢ per kWh in the baseline scenario to 6.5¢ with $8bn of investment. The transition would require a society-wide transformation, but Cuba has demonstrated its ability to adapt in the past, such as its rapid shift to agroecology and self-sufficiency in the 1990s.The question remains: who would pay for this transition? The report suggests that financing should be understood as "reparative climate finance", with Cubans able to pay back investments through savings on cheaper energy. The transformation would not only benefit Cuba but also set an important example of a rapid energy transition under conditions of external constraint.

In 2020, several nations—including the UK and India—announced ambitious bans on new internal‑combustion‑engine vehicles, while Norway already saw around 60% of new car sales being electric. Australia, however, remained on a different trajectory. Former Prime Minister Scott Morrison dismissed a Labor proposal for a non‑binding 50% electric‑vehicle target by 2030, claiming it would “end the weekend.” The Coalition ignored analyses suggesting that a robust emissions‑cut scheme could deliver a $14 billion net benefit by 2040, and later abandoned plans for an EV‑specific strategy. Five years on, the Albanese government has introduced a vehicle‑efficiency standard mandating annual reductions in average emissions from new cars. Though a long‑awaited move, the policy’s impact will be incremental rather than transformative. March saw a record number of Australians purchasing EVs, yet the market share remains modest—still under 15% of new car sales, up only slightly from 13% in 2025. With fuel prices soaring amid the Iran conflict, the majority of vehicles leaving showrooms are still powered by petrol or diesel, and many will stay on the road for the next 15‑20 years. One bright spot is the surge in second‑hand EV sales, which more than doubled last month despite a tiny baseline. Higher resale values are encouraging broader adoption by making electric cars financially accessible to a larger pool of buyers. Globally, electric vehicles accounted for roughly 25% of new car sales last year. In Australia, the price differential between comparable petrol and electric models averages around 20%, a significant barrier for many consumers. That gap is narrowing, and the potential savings for EV drivers are substantial. Data from energy analyst Simon Holmes à Court—using Amber electricity retailer figures—show that an EV can travel over 40 km per $1 of energy, whereas a conventional car manages less than 5 km per $1 of fuel. Amber’s own smart‑charging platform suggests the distance could reach 160 km per $1 under optimal conditions. Despite such evidence, Australian political discourse often struggles to envision a low‑fossil‑fuel future. Calls for expanded oil exploration, such as Queensland Premier David Crisafulli’s claim of a “sea of oil” in the Taroom trough, lack substantiation and would likely involve costly, long‑term development with uncertain returns. Compounding the issue, the mining sector—Australia’s biggest diesel consumer—receives a 52‑cent‑per‑litre rebate under a national fuel‑tax credit scheme, effectively subsidising over $1 billion annually for diesel use in coal mines. This incentive discourages investment in cleaner truck technologies, even as the safeguard mechanism attempts to curb emissions. Policy recommendations include tightening the vehicle‑efficiency standard to accelerate the shift toward cleaner cars, removing parallel‑import restrictions to boost the supply of affordable second‑hand EVs (as practiced in New Zealand), and reconsidering any road‑user charges on electric vehicles, which currently represent less than 2% of the total fleet. International examples offer guidance: China jump‑started its EV boom by issuing “green” licence plates and imposing hefty fees for fossil‑fuel plates, effectively raising the cost of owning a petrol car by up to $20,000. In sum, Australia’s delayed embrace of electric mobility not only hampers climate goals but also forfeits billions in economic gains. A decisive, well‑targeted policy overhaul could unlock significant consumer savings, reduce emissions, and align the nation with global EV trends.

Great Britain is on the verge of a record‑breaking summer of wind and solar generation, creating the possibility of the first zero‑carbon electricity periods in the nation’s power system.The government’s ambition to achieve a 95% gas‑free grid by 2030 underpins this push, as electrified transport, heat pumps and low‑carbon industry will need a clean power supply to meet climate targets.National Grid ESO (Neso) forecasts that on sunny weekend afternoons the grid could have more renewable power than demand, leaving excess capacity that would otherwise be wasted.To turn surplus into savings, Neso is urging households and businesses to shift flexible loads—such as charging electric vehicles, running dishwashers or doing laundry—to those high‑renewable windows.Leading suppliers Octopus Energy and British Gas have confirmed participation, offering special tariffs that reward consumers for using electricity when it is abundant.British Gas’s “PeakSave” scheme, for example, provides half‑price electricity from 11 am to 4 pm on Sundays, with an even cheaper “Super Sunday” option from 9 am to 5 pm. The company says the tariff has saved over £45 million for more than 1 million customers since its 2023 launch. Octopus Energy reports helping 2 million households save about £11 million, including £3 million in free electricity during periods of high renewable output.Other providers—including Ovo Energy and EDF Energy—offer similar “time‑of‑use” tariffs that charge higher rates when renewables are scarce, giving price‑sensitive users a clear incentive to shift consumption.Beyond bill reductions, flexible demand curtails the need for “constraint payments” to wind and solar farms—payments that reached almost £1.5 billion last year. By encouraging consumers to “turn up” rather than forcing generators to “turn down,” the grid can avoid these costly curtailments.Businesses are also joining the flexibility movement. Tech firms report that adaptable energy use can cut datacenter grid costs by up to 5% and slash emissions by as much as 40%. Danish engineering group Danfoss estimates that if datacentres operated flexibly for just 1% of the time, the pipeline of new facilities expected by 2035 could be accommodated without overloading the grid.In short, leveraging surplus renewable power now—through smart tariffs and demand‑shifting—offers a cheaper, faster alternative to massive storage or grid‑upgrade projects, while delivering tangible savings for consumers and a decisive step toward a low‑carbon British electricity system.

The United States military has begun a mine clearance operation in the Strait of Hormuz, a vital waterway for global oil and gas supplies, in response to Iran's alleged laying of sea mines. The operation, led by guided missile destroyers USS Frank E Peterson and USS Michael Murphy, aims to establish a 'safe pathway' for the free flow of global commerce.Iran's Islamic Revolutionary Guard Corps (IRGC) recently released a map of the Strait of Hormuz showing a safe route for ships to follow through the strait, directing vessels farther north towards the Iranian coast and away from the traditional route closer to the coast of Oman. The IRGC stated that all vessels must use the new map for navigation due to 'the likelihood of the presence of various types of anti-ship mines in the main traffic zone.'The stakes are high, with one-fifth of the world's oil and liquefied natural gas (LNG) supplies having been shipped through the Strait of Hormuz before the war. Even a single mine can compel operators to assume a wider threat, effectively invalidating insurance and shutting down their use of the waterway.Iran's stockpile is estimated to number 2,000 to 6,000 mines, a significant portion of which are produced domestically. These mines generally fall into three categories: contact mines, bottom (influence) mines, and 'smart' and rocket mines.The US Navy is facing a 'mine gap,' with experts calling for institutional neglect that led to the retirement of dedicated mine countermeasures (MCM) assets. The current US strategy relies on small combat ships built for coastal operations and fitted with MCM mission modules, but only one of these vessels, the USS Canberra, is currently available in the region.

Tanya Khovanova has long been a leading voice in the world of recreational mathematics, authoring a popular blog and running the Number Gossip site where enthusiasts can inquire about any number.She now debuts her first book, Mathematical Puzzles and Curiosities, co‑written with fellow puzzle‑enthusiasts Ivo David and Yogev Shpilman. Published by World Scientific, the volume offers fresh challenges and inventive twists on classic problems.To give readers a taste, Khovanova selected three puzzles for the Guardian column:1. Battleships – As a naval admiral you must choose between sending a single vessel with a success probability of P % or two vessels each with a P/2 % chance, where the mission succeeds if at least one ship does. Which strategy maximises the odds?2. The Two Oracles – You face two respondents, Randie, who answers randomly, and Rando, who randomly decides to tell the truth or lie before each answer. Is there a method to distinguish them?3. Bad Maths – A student computes 5548 − 5489 as 59, claiming the “548” cancels out. He then experiments with a subtraction of the form XXYZ − XYZW (distinct digits) and observes the result is XW. How many digits in the new expression match those in the original calculation?Solutions to the trio were later posted online (update), but readers were urged to avoid spoilers until the scheduled reveal.Khovanova also reminds fans that she has been curating puzzles for the Guardian every other Monday since 2015 and welcomes new submissions via email.

Finding the perfect feel-good movie can be a daunting task, especially with the vast library of films available today. However, for the author, Hot Fuzz stands out as the ultimate comfort movie. Directed by Edgar Wright, Hot Fuzz is the second installment in his Cornetto trilogy, following Shaun of the Dead and preceding The World's End. The film tells the story of Sergeant Angel, a fish-out-of-water city cop who teams up with local PC Danny Butterman to investigate a series of mysterious deaths in the sleepy village of Sandford. It's a love letter to buddy cop movies and the action genre, featuring a star-studded cast including Simon Pegg and Nick Frost. The film's blend of humor, action, and smart writing makes it a standout. One of the key reasons Hot Fuzz remains endearing and enduring is its ability to respond to multiple needs. Whether you're looking for something funny, expertly crafted, explosive, thought-provoking, or simply to switch off to, Hot Fuzz delivers. The film's quotability and memorable lines, such as 'For the greater good' and 'It's just the one swan actually', have become ingrained in popular culture. The author's personal connection to the film adds to its significance. Hot Fuzz introduced them to Edgar Wright, whom they ended up writing their dissertation about. The film's impact extends beyond the screen, with its quotes and references frequently popping up in conversations. It's no wonder that Hot Fuzz has become a timeless classic, continuing to entertain audiences to this day. Hot Fuzz is available to rent digitally in the US, on ITVX in the UK, and on Binge in Australia.

Director Luca Guadagnino has come to the defense of actor Timothée Chalamet after Chalamet faced backlash for suggesting that ballet and opera are art forms that "no one cares about" anymore.Guadagnino, who cast Chalamet in his breakthrough role in Call Me By Your Name, stated that the reaction to Chalamet's comments was disproportionate. "I am not on social media and don’t understand how one [single] comment can become a planetary polemic," Guadagnino said in an interview with Italian newspaper La Stampa.Guadagnino, who made his opera debut in 2011 with a production of Verdi’s Falstaff, noted that Chalamet "could have spared himself … but he’s young, smart, sensitive, and he fears that cinema could become marginal." He emphasized the importance of nurturing all forms of imagination and uniting the arts, rather than separating them.Chalamet's remarks sparked significant backlash from the ballet and opera communities, including Jamie Lee Curtis and Whoopi Goldberg, who publicly criticized him. The Maggio Musicale Fiorentino invited Chalamet to attend Guadagnino's production of The Death of Klinghoffer, saying, "Come and see for yourself that opera is alive, kicking and actually matters to people."

The Pivot from Vision Pro to Everyday WearablesApple is reportedly preparing to enter the smart glasses market with a product launch targeted for 2027, signaling a significant strategic shift away from its ambitious mixed reality ambitions.Four Distinct Design PrototypesRectangular Frames: Ranging from large to slim, potentially mimicking the style of CEO Tim Cook.Oval/Circular Frames: Available in both larger and smaller sizes.Color Options: Black, ocean blue, and light brown.A Strategic Retreat from High-End ARThis move represents a retreat from the complex Vision Pro ecosystem, which faced delays and lukewarm reception. Instead, Apple is betting on a simpler form factor similar to Meta’s Ray-Ban glasses.The 2027 Roadmap: Simplicity Over ImmersionThe upcoming device will lack displays, focusing instead on camera lenses for photos, videos, calls, and music. It will also integrate with the long-promised Siri upgrade, aiming to capture the mainstream market rather than the niche enthusiast base.

When wages have been stagnant for almost two decades and a simple tube of toothpaste now costs nearly £7 at a major supermarket, the claim that “money can’t buy happiness” feels increasingly dismissive. The argument rests on a narrow view of what money can achieve. Spending cash solely on material goods yields only short‑lived pleasure. In contrast, the ability to afford time, experiences and mental‑health support expands one’s sense of freedom and purpose. Even basic needs such as leisure have become commodified; more disposable income simply translates into more opportunities to pursue what matters. As someone diagnosed with ADHD, I have learned—through personal trial rather than formal neuroscience—how to secure a steady supply of dopamine. The cheapest route is not a quick thrill, but activities that provide lasting satisfaction, such as novel experiences and moments of awe. One vivid example came during a winter trip to rural France, where two feet of snow turned the landscape into a scene straight out of Narnia. The awe‑inspiring view was a reminder that nature’s restorative power is often accessible only to those who can afford the travel, in my case a budget flight with Ryanair. Research supports the intuition that higher income correlates with greater happiness. A 2023 study by psychologists at Princeton and the University of Pennsylvania found that people with higher earnings report higher life satisfaction, though money cannot resolve non‑financial sources of unhappiness. Even the world’s richest are not immune to the paradox. Earlier this year, Elon Musk—on track to become the first trillionaire—tweeted that anyone who says “money can’t buy happiness” must be missing something. While Musk’s wealth may not guarantee personal joy, the same resources could provide a foundation for happiness for billions facing financial strain. Nevertheless, hoarding wealth like a dragon does not equate to fulfillment. The column suggests that redirecting a portion of vast fortunes toward travel, cultural enrichment, and shared experiences could transform isolated wealth into collective well‑being. In short, financial stability reduces stress and broadens horizons. It allows individuals to invest in the intangible assets—time, relationships, awe‑inducing experiences—that truly enrich life.