Smartphones “have made it easier than ever to avoid interacting with the people in our immediate environment, writes New York City-based author Joe Keohane.

But is that always good? “Some social scientists believe teaching kids that literally everyone in the world they hadn’t met is dangerous may have been actively harmful.”

For several years, I researched why we don’t talk to strangers and what happens when we do for my book, The Power of Strangers: The Benefits of Connecting in a Suspicious World. This effort put me in the company of anthropologists, psychologists, sociologists, political scientists, archeologists, urban designers, activists, philosophers, and theologians, plus hundreds of random strangers I talked to wherever I went. What I learned was this: we miss a lot by being afraid of strangers. Talking to strangers — under the right conditions — is good for us, good for our neighborhoods, our towns and cities, our nations, and our world. Talking to strangers can teach you things, deepen you, make you a better citizen, a better thinker, and a better person.

It’s a good way to live. But it’s more than that. In a rapidly changing, infinitely complex, furiously polarised world, it’s a way to survive….

Talking to strangers can also make us wiser, more worldly, and more empathetic, says Harvard University professor and MacArthur “genius grant” recipient, Danielle Allen. When she was teaching at the University of Chicago, Allen was repeatedly warned by colleagues to stay away from the poorer side of town. She believes that this “fear of strangers was actually eroding a lot of [her peers’] intellectual and social capacities”. She declined to stay away, and did some of her most admired work in those neighbourhoods. She has since devoted her career to fostering connections between people and groups that otherwise would not interact. “Real knowledge of what’s outside one’s garden cures fear,” Allen writes, “but only by talking to strangers can we come by such knowledge.”

By talking to strangers, you get a glimpse of the mind-boggling complexity of the human species, and the infinite variety of human experiences. It’s a cliché, but you get to see the world from the eyes of another, without which wisdom is impossible…. When these interactions go well — and they generally do — the positive perception of the stranger can generalise into better feelings about people. For me — and many of the respected experts and complete strangers I’ve spoken to — it comes down to a question of data. If I based all my perceptions of humanity on what is available through my phone or laptop, I would have a fantastically negative view of most other people.

Read more of this story at Slashdot.

Source: Slashdot – Can Talking to Strangers Make Us Smarter?

“Four times a week on average, an e-bike or e-scooter battery catches fire in New York City,” reports NPR:

Sometimes, it does so on the street, but more often, it happens when the owner is recharging the lithium ion battery. A mismatched charger won’t always turn off automatically when the battery’s fully charged, and keeps heating up. Or, the highly flammable electrolyte inside the battery’s cells leaks out of its casing and ignites, setting off a chain reaction.

“These bikes when they fail, they fail like a blowtorch,” said Dan Flynn, the chief fire marshal at the New York Fire Department. “We’ve seen incidents where people have described them as explosive — incidents where they actually have so much power, they’re actually blowing walls down in between rooms and apartments.”

And these fires are getting more frequent.

As of Friday, the FDNY investigated 174 battery fires, putting 2022 on track to double the number of fires that occurred last year (104) and quadruple the number from 2020 (44). So far this year, six people have died in e-bike-related fires and 93 people were injured, up from four deaths and 79 injuries last year.

Read more of this story at Slashdot.

Source: Slashdot – Fires from Exploding E-Bike Batteries Nearly Doubled This Year in New York City

Here’s the Guardian’s report on new cryptographic techniques where “you can share data while keeping that data private” — known by the umbrella term “privacy-enhancing technologies” (or “Pets).
They offer opportunities for data holders to pool their data in new and useful ways. In the health sector, for example, strict rules prohibit hospitals from sharing patients’ medical data. Yet if hospitals were able to combine their data into larger datasets, doctors would have more information, which would enable them to make better decisions on treatments. Indeed, a project in Switzerland using Pets has since June allowed medical researchers at four independent teaching hospitals to conduct analysis on their combined data of about 250,000 patients, with no loss of privacy between institutions. Juan Troncoso, co-founder and CEO of Tune Insight, which runs the project, says: “The dream of personalised medicine relies on larger and higher-quality datasets. Pets can make this dream come true while complying with regulations and protecting people’s privacy rights. This technology will be transformative for precision medicine and beyond.”

The past couple of years have seen the emergence of dozens of Pet startups in advertising, insurance, marketing, machine learning, cybersecurity, fintech and cryptocurrencies. According to research firm Everest Group, the market for Pets was $2bn last year and will grow to more than $50bn in 2026. Governments are also getting interested. Last year, the United Nations launched its “Pet Lab”, which was nothing to do with the welfare of domestic animals, but instead a forum for national statistical offices to find ways to share their data across borders while protecting the privacy of their citizens.

Jack Fitzsimons, founder of the UN Pet Lab, says: “Pets are one of the most important technologies of our generation. They have fundamentally changed the game, because they offer the promise that private data is only used for its intended purposes….” The emergence of applications has driven the theory, which is now sufficiently well developed to be commercially viable. Microsoft, for example, uses fully homomorphic encryption when you register a new password: the password is encrypted and then sent to a server who checks whether or not that password is in a list of passwords that have been discovered in data breaches, without the server being able to identify your password. Meta, Google and Apple have also over the last year or so been introducing similar tools to some of their products.

The article offers quick explanations of zero-knowledge proofs, secure multiparty computation, and fully homomorphic encryption (which allows the performance of analytics on data by a second party who never reads the data or learns the result).

And “In addition to new cryptographic techniques, Pets also include advances in computational statistics such as ‘differential privacy’, an idea from 2006 in which noise is added to results in order to preserve the privacy of individuals.”

Read more of this story at Slashdot.

Source: Slashdot – How Privacy-Enhancing Technologies Are Fulfilling Cryptography’s Potential

NBC News reports:

A global helium shortage has doctors worried about one of the natural gas’s most essential, and perhaps unexpected, uses: MRIs.

Strange as it sounds, the lighter-than-air element that gives balloons their buoyancy also powers the vital medical diagnostic machines. An MRI can’t function without some 2,000 liters of ultra-cold liquid helium keeping its magnets cool enough to work. But helium — a nonrenewable element found deep within the Earth’s crust — is running low, leaving hospitals wondering how to plan for a future with a much scarcer supply…. [F]our of five major U.S. helium suppliers are rationing the element, said Phil Kornbluth, president of Kornbluth Helium Consulting. These suppliers are prioritizing the health care industry by reducing helium allotments to less essential customers.

Hospitals haven’t canceled patients’ MRIs or shut down machines yet. They have seen helium costs rise at an alarming rate, though — possibly up to 30%, guessed Phil Kornbluth, president of Kornbluth Helium Consulting. But without an end in sight for the helium shortage, the future of MRI remains uncertain…. The problem is that no other element is cold enough for the MRI. “There’s no alternative,” said Donna Craft, a regional construction manager for Premier Inc. who contracts with helium suppliers for some 4,000 hospitals. “Without helium, MRIs would have to shut down….”

GE and Siemens are both developing MRIs requiring less liquid helium. Siemens recently introduced one requiring just 0.7 liters, and, according to Panagiotelis, GE rolled out a machine that’s “1.4 times more efficient than previous models.” These technologies aren’t widely available, though, and replacing the country’s 12,000 MRI machines — each weighing up to 50,000 pounds — is anything but a quick fix. Meanwhile, hospitals keep installing additional conventional MRI machines to meet demand for diagnostic scans.

The article notes some scientists are already shutting down research projects that require helium.

Thanks to long-time Slashdot reader Wildbear for submitting the article!

Read more of this story at Slashdot.

Source: Slashdot – The World Is Running Out of Helium. Why Doctors are Worried

“NASA’s Earth Surface Mineral Dust Source Investigation (EMIT) mission is mapping the prevalence of key minerals in the planet’s dust-producing deserts — information that will advance our understanding of airborne dust’s effects on climate,” NASA announced this week.

“But EMIT has demonstrated another crucial capability: detecting the presence of methane, a potent greenhouse gas.”

In the data EMIT has collected since being installed on the International Space Station in July, the science team has identified more than 50 “super-emitters” in Central Asia, the Middle East, and the Southwestern United States. Super-emitters are facilities, equipment, and other infrastructure, typically in the fossil-fuel, waste, or agriculture sectors, that emit methane at high rates. “Reining in methane emissions is key to limiting global warming. This exciting new development will not only help researchers better pinpoint where methane leaks are coming from, but also provide insight on how they can be addressed — quickly,” said NASA Administrator Bill Nelson.

“The International Space Station and NASA’s more than two dozen satellites and instruments in space have long been invaluable in determining changes to the Earth’s climate. EMIT is proving to be a critical tool in our toolbox to measure this potent greenhouse gas — and stop it at the source….”

“These results are exceptional, and they demonstrate the value of pairing global-scale perspective with the resolution required to identify methane point sources, down to the facility scale,” said David Thompson, EMIT’s instrument scientist and a senior research scientist at NASA’s Jet Propulsion Laboratory in Southern California, which manages the mission. “It’s a unique capability that will raise the bar on efforts to attribute methane sources and mitigate emissions from human activities.”

Relative to carbon dioxide, methane makes up a fraction of human-caused greenhouse-gas emissions, but it’s estimated to be 80 times more effective, ton for ton, at trapping heat in the atmosphere in the 20 years after release. Moreover, where carbon dioxide lingers for centuries, methane persists for about a decade, meaning that if emissions are reduced, the atmosphere will respond in a similar timeframe, leading to slower near-term warming…. “Some of the plumes EMIT detected are among the largest ever seen — unlike anything that has ever been observed from space,” said Andrew Thorpe, a research technologist at JPL leading the EMIT methane effort. “What we’ve found in a just a short time already exceeds our expectations.”

For example, the instrument detected a plume about 2 miles (3.3 kilometers) long southeast of Carlsbad, New Mexico, in the Permian Basin. One of the largest oilfields in the world, the Permian spans parts of southeastern New Mexico and western Texas. In Turkmenistan, EMIT identified 12 plumes from oil and gas infrastructure east of the Caspian Sea port city of Hazar. Blowing to the west, some plumes stretch more than 20 miles (32 kilometers)…. With wide, repeated coverage from its vantage point on the space station, EMIT will potentially find hundreds of super-emitters — some of them previously spotted through air-, space-, or ground-based measurement, and others that were unknown.

“As it continues to survey the planet, EMIT will observe places in which no one thought to look for greenhouse-gas emitters before, and it will find plumes that no one expects,” said Robert Green, EMIT’s principal investigator at JPL.

Read more of this story at Slashdot.

Source: Slashdot – Space Station Astronauts Spot the World’s Largest Methane Polluters