CNBC visited a small group of bitcoin miners who "set up shop at the site of an extinct volcano" near Kenya's Hell's Gate National Park. Their mine "consists of a single 500-kilowatt mobile container that, from the outside, looks like a small residential trailer." But what's more interesting is it's operated by a startup called Gridless. (According to its web site Gridless "designs, builds, and operates bitcoin mining sites alongside small-scale renewable energy producers in rural Africa where excess energy is not utilized...") Backed by Jack Dorsey's Block, Gridless electrifies its machines with a mix of solar power and the stranded, wasted energy from a nearby geothermal site. It's one of six mines run by the company in Kenya, Malawi and Zambia, powered by a mix of renewable inputs and working toward a broader mission of securing and decentralizing the bitcoin network... In early 2022, [the three Gridless co-founders] began brainstorming creative solutions for the divide between power generation and capacity, and the lack of access to electricity in Africa. They landed on the idea of bitcoin mining, which could potentially solve a big problem for renewable energy developers by taking their stranded power and spreading it to other parts of the continent. In Africa, 43% of the population, or roughly 600 million people, lack access to electricity.... Africa is home to an estimated 10 terawatts of solar capacity, 350 gigawatts of hydro and another 110 gigawatts of wind. Some of this renewable energy is being harnessed already, but a lot isn't because building the specialized infrastructure to capture it is expensive. Even with 60% of the best solar resources globally, Africa only has 1% of installed solar PV capacity. Enter bitcoin miners. Bitcoin gets a bad rap for the amount of energy it consumes, but it can also help unlock these trapped renewable sources of power. Miners are essentially energy buyers, and co-locating with renewables creates a financial incentive to bolster production. "As often happens, you'll have an overage of power during the day or even at night, and there's nobody to soak that power up," said Hersman. He said his company's 50-kilowatt mining container can "take up whatever is extra throughout the day...." Demand from bitcoin miners on these semi-stranded assets is making renewables in Africa economically viable. The power supplier benefits from selling energy that previously had been discarded, while the energy plants will sometimes lower costs for the customer. At one of the Gridless pilot sites in Kenya, the hydro plant dropped the price of power from 35 cents per kilowatt hour to 25 cents per kWh. The buildout of capacity is also electrifying households. Gridless says its sites have powered 1,200 houses in Zambia, 1,800 in Malawi and 5,000 in Kenya. The company's mines also have delivered power for containerized cold storage for local farmers, battery charging stations for electric motorcycles and public WiFi points.

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A software glitch in the "ticket in, cash out" (TICO) machines at Star Casino in Sydney, Australia, saw it inadvertently give away $2.05 million over several weeks. This glitch allowed gamblers to reuse a receipt for slot machine winnings, leading to unwarranted cash payouts which went undetected due to systematic failures in oversight and audit processes. The Register reports: News of the giveaway emerged on Monday at an independent inquiry into the casino, which has had years of compliance troubles that led to a finding that its operators were unsuitable to hold a license. In testimony [PDF] given on Monday to the inquiry, casino manager Nicholas Weeks explained that it is possible to insert two receipts into TICO machines. That was a feature, not a bug, and allowed gamblers to redeem two receipts and be paid the aggregate amount. But a software glitch meant that the machines would return one of those tickets and allow it to be re-used -- the barcode it bore was not recognized as having been paid. "What occurred was small additional amounts of cash were being provided to customers in circumstances when they shouldn't have received it because of that defect," Weeks told the inquiry. Local media reported that news of the free cash got around and 43 people used the TICO machines to withdraw money to which they were not entitled -- at least one of them a recovering gambling addict who fell off the wagon as the "free" money allowed them to fund their activities. Known abusers of the TICO machines have been charged, and one of those set to face the courts is accused of association with a criminal group. (The first inquiry into The Star, two years ago, found it may have been targeted by organized crime groups.)

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In an interview with Roblox Studio head Stefano Corazza, Eurogamer asked about the reputation Roblox has gained and the notion that it was exploitative of young developers, since it takes a cut from work sometimes produced by children. Here's what he had to say: "I don't know, you can say this for a lot of things, right?" Corazza said. "Like, you can say, 'Okay, we are exploiting, you know, child labour,' right? Or, you can say: we are offering people anywhere in the world the capability to get a job, and even like an income. So, I can be like 15 years old, in Indonesia, living in a slum, and then now, with just a laptop, I can create something, make money and then sustain my life. "There's always the flip side of that, when you go broad and democratized - and in this case, also with a younger audience," he continued. "I mean, our average game developer is in their 20s. But of course, there's people that are teenagers -- and we have hired some teenagers that had millions of players on the platform. "For them, you know, hearing from their experience, they didn't feel like they were exploited! They felt like, 'Oh my god, this was the biggest gift, all of a sudden I could create something, I had millions of users, I made so much money I could retire.' So I focus more on the amount of money that we distribute every year to creators, which is now getting close to like a billion dollars, which is phenomenal." At this point the PR present during the interview added that "the vast majority of people that are earning money on Roblox are over the age of 18." "And imagine like, the millions of kids that learn how to code every month," Corazza said. "We have millions of creators in Roblox Studio. They learn Lua scripting," a programming language, "which is pretty close to Python - you can get a job in the tech industry in the future, and be like, 'Hey, I'm a programmer,' right? "I think that we are really focusing on the learning - the curriculum, if you want - and really bringing people on and empowering them to be professionals."

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Many investors are lining up to bet on the collapse of former President Donald J. Trump's social media company, Trump Media & Technology Group Corp., which made its stock market debut last week under the ticker "DJT." The stock has been called the "mother of all meme stocks" since it is highly volatile and there are no fundamental underpinnings. It's being valued at roughly 1,600 times its annual revenue, at Wednesday's closing price. "By comparison, the stock of Facebook's owner trades at about eight times revenues, and Google's owner trades at six times," notes Fast Company. The New York Times reports: Trump Media is the most "shorted" special purpose acquisition vehicle in the country, according to the financial data company S3 Partners. Short-sellers bet that the price of a stock will fall. They do that by borrowing shares of a company and selling them into the market, hoping to buy them back later at a lower price, before returning the shares to the lender and pocketing the difference as profit. The demand to short Trump Media, the parent company of the social media platform Truth Social, is so great that stock lenders can charge enormous fees, making it hard for short-sellers to turn a profit unless the shares fall significantly. Still, there is a lot of interest in taking the bet. "They are looking for this stock to crater and crater very quickly," said Ihor Dusaniwsky, managing director of predictive analytics at S3. Last month, traders lost $126 million betting against Trump Media, according to S3. On Monday, Trump Media published updated financial information, revealing little revenue, large losses and a statement from the company's independent auditor expressing "substantial doubt" about its financial viability. This appeared to galvanize investors betting against the company, as the stock slipped from its highs. But short-sellers are finding it difficult and costly to trade in Trump Media. There are roughly 137 million shares in the company, and only around five million of those are available to short-sellers. Mr. Trump owns about 60 percent of shares, and company executives also hold a chunk of the stock. Company insiders tend not to lend their shares to short-sellers. Big asset managers like BlackRock, Vanguard and State Street, which regularly lend out shares, are not major holders of Trump Media, further crimping the supply. According to S3, 4.9 million of the roughly five million available shares are already on loan. As with any loan, when share owners lend their stock to a short-seller, they charge a fee, usually expressed as an annual interest rate on the stock's current value. Typically, the fee for borrowing stock is a fraction of a percentage point. For Trump Media, it has risen to 550 percent, Mr. Dusaniwsky said. Trump Media's stock currently trades at around $50. That means that shorting it for a month would cost more than $20 per share. For a short-seller to break even, the stock price would have to fall by almost half by early May. There is another wrinkle, too. One large broker said much of the short trading was not an outright bet against Trump Media. Since the advent of meme-stock trading and the vilification of short-sellers that win only if popular companies lose, large investors are wary of making such trades. Instead, the current trade driving demand is designed to capture the difference between DJT's stock price and outstanding "warrants," which will give the owners the right to new stock at a fixed price as long as regulators approve the new shares. Partly because of that uncertainty, those warrants currently trade below $19, with a list of hedge funds as recent holders. Even after the high cost to borrow stock is accounted for, they are still able to profit from the $30 difference between existing stock and what the warrants are worth, assuming the warrants become registered as shares.

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Two of the world's largest credit card networks, Visa and Mastercard, as well as the banks that issue cards with them, have agreed to settle a decadeslong antitrust case brought upon by merchants. From a report: The settlement is set to lower swipe fees merchants pay when customers make purchases using their Visa or Mastercard by $30 billion over five years, according to a press release announcing the settlement Tuesday morning. The settlement, which only applies to US merchants, is the result of a lawsuit filed in 2005. However, nothing is considered finalized until it receives approval from the US District Court for the Eastern District of New York. Even then, the case can also be appealed in what could be a lengthy battle. Typically, swipe fees cost merchants 2% of the total transaction a customer makes -- but can be as much as 4% for some premium rewards cards, according to the National Retail Federation. The settlement would lower those fees by at least 0.04 percentage point for a minimum of three years. Additionally, the settlement would require Visa and Mastercard to maintain the swipe fee rates that existed as of December 31, 2023 for five years.

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The abstract of a new paper published on Journal of Financial Economics: We study aggregate lapsation risk in the life insurance sector. We construct two lapsation risk factors that explain a large fraction of the common variation in lapse rates of the 30 largest life insurance companies. The first is a cyclical factor that is positively correlated with credit spreads and unemployment, while the second factor is a trend factor that correlates with the level of interest rates. Using a novel policy-level database from a large life insurer, we examine the heterogeneity in risk factor exposures based on policy and policyholder characteristics. Young policyholders with higher health risk in low-income areas are more likely to lapse their policies during economic downturns. We explore the implications for hedging and valuation of life insurance contracts. Ignoring aggregate lapsation risk results in mispricing of life insurance policies. The calibrated model points to overpricing on average. In the cross-section, young, low-income, and high-health risk households face higher effective mark-ups than the old, high-income, and healthy.

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