November 11, 2022 - A Brain-Inspired Chip Can Run AI With Far Less Energy | Quanta Magazine
A Brain-Inspired Chip Can Run AI With Far Less Energy | Quanta Magazine Artificial intelligence algorithms cannot keep growing at their current pace. Algorithms like deep neural networks — which are loosely inspired by the brain, with multiple layers of artificial neurons linked to each other via numerical values called weights — get bigger every year. But these days, hardware improvements are no longer keeping pace with the enormous amount of memory and processing capacity required to run these massive algorithms. Soon, the size of AI algorithms may hit a wall. And even if we could keep scaling up hardware to meet the demands of AI, there's another problem: running them on traditional computers wastes an enormous amount of energy. The high carbon emissions generated from running large AI algorithms is already harmful for the environment, and it will only get worse as the algorithms grow ever more gigantic. One solution, called neuromorphic computing, takes inspiration from biological brains to create energy-efficient designs. Unfortunately, while these chips can outpace digital computers in conserving energy, they've lacked the computational power needed to run a sizable deep neural network. That's made them easy for AI researchers to overlook. Continued here |
Geometry Reveals the Tricks Behind Gerrymandering Designing a perfect election system for multiple parties is impossible, even with mathematical tools. But if, by and large, there are only two dominant parties, as in the U.S., things should be fairly clear-cut. The party candidate with the most votes wins, right? Anyone who has followed U.S. presidential elections in recent years knows that the reality is different. One important factor is the actual shape of the voting districts. If cleverly designed, a party that is actually losing can still gain the majority of representatives—an issue that was by no means absent in the U.S. midterm elections. Here’s a highly simplified example: suppose a state consists of 50 voters, 20 of whom vote for a blue party and 30 for a red party. Voters might live in a grid pattern, as in, say, some sections of Manhattan. Suppose there are 10 north-south avenues and five east-west streets. All the red voters live on the first two avenues, the ones furthest west. The blue voters reside on the other three avenues. Now the task is to divide the voters into five electoral districts of equal size. Continued here |
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Global Human Population to Reach Eight Billion by November 15 While U.N. officials warn against "population alarmism," some experts say this milestone should be a wake-up call The population of humans on Earth is expected to reach eight billion by November 15, according to the United Nations. The organization credits this rise to an increase in human lifespan enabled by improvements in public health, nutrition, personal hygiene and medicine. It also added that "high and persistent levels of fertility in some countries" have contributed to population growth. Continued here |
This Fish Eats Its Own Young Some female cichlids counter the stress of protecting their offspring by munching on them, study suggests In an extreme feat of parenting, some female cichlid fish carry their eggs and babies in their mouths for about two weeks. In this way, the young fish and fish-to-be are protected from predators in the outside world. The problem? Some get eaten by their own mothers. A new study published Wednesday in Biology Letters not only reveals this cannibalism, but it suggests mother fish that eat their own young reduce cell damage caused by mouthbrooding, writes James Ashworth for London’s Natural History Museum. Continued here |
Climate Impacts Threaten Nearly Every Aspect of Life in U.S., Government Report Says The report lays out the growing threats to U.S. society in some of the starkest terms ever seen in the periodic assessments. The United States as a whole has already warmed by about 2.5 degrees F since 1970, compared to about 1.6 degrees of warming worldwide over the same period. The effects of climate change are “far-reaching and worsening,” the report states, and larger reductions in greenhouse gas emissions are needed immediately to avoid even worse outcomes. The draft report places a new emphasis on the unequal burden of climate change, with low-income communities often being ill-prepared to deal with the impacts of a warming world after decades of under investment in critical infrastructure. Homes with aging insulation are less prepared to deal with rising energy prices resulting from climate change. Low-income and minority communities often have less tree cover, more pavement and higher levels of air pollution, making them more vulnerable to extreme heat and susceptible to adverse health impacts, the report found. Continued here |
Did This Man Destroy a Frida Kahlo Drawing to Make an NFT? Back in July, at an extravagant Miami mansion party, Martin Mobarak wore a sequined blazer featuring the face of Frida Kahlo. “What we’re going to do today here,” he informed his guests, “it’s going to change the lives of thousands of children, and I hope that everyone that is here can understand it.” Mobarak, a wealthy Mexican businessman who lives in Miami, held up what he claimed was a drawing from one of Kahlo’s diaries. He proceeded to remove it from its frame, place it in a martini glass filled with bright blue rubbing alcohol, and set it on fire. As the drawing burned, an image of it emerged from digital flames on a screen behind Mobarak. His company, Frida.NFT, would now be selling 10,000 non-fungible tokens (NFTs) of the image. The drawing, per the company’s website, “was permanently transitioned into the Metaverse.” Some portion of the proceeds, his organization claimed, would support “unfortunate children, battered women and other less fortunate around the world.” Continued here |
How to avoid bad choices When you're in charge of a small child, even the most idyllic setting can turn into a danger zone. In the first years, there is the risk of being hit by a car, falling into a pool or pond, or being bitten by a dog (most commonly, the family's own). The potential perils change with the child's age: alcohol, drugs, violence and untreated mental health issues can endanger the wellbeing of teens and young adults. Road traffic injuries remain a major risk, too. And then there are the invisible dangers, such as air pollution, which are often especially hard to detect and address. Eventually, we all need to be able to appraise risk ourselves, so that we can navigate the world safely without the guidance of our parents or guardian. Without those skills, we are far more likely to make rash decisions that can result in poor health, financial distress – and even a criminal record. Continued here |
How to tell whether you’re being careful or giving in to anxiety | Psyche Ideas Anxiety is a signal that danger is imminent. When the danger is real, anxiety can help to keep us safe. The problem is that for many people, anxiety becomes a false alarm . and it can lead someone to feel just as threatened as if there were real danger ahead. Most of us are familiar with the physical sensations of anxiety, such as a rapid heartbeat or a sinking feeling in the stomach, and the mental symptoms such as racing and worrisome thoughts. In terms of behaviour, avoidance is the hallmark symptom of anxiety. Simply put, we avoid what we feel anxious about: if we are afraid of heights or snakes, we avoid skyscrapers or walking in tall grass. People who experience social anxiety often avoid social gatherings or situations where they might have to speak in front of people. Continued here |
Anita Sarkeesian Hates Talking About Gamergate -- but She Has To If you'd like to debate Anita Sarkeesian about whether or not male privilege exists, we'll make this easy for you: She's not interested. It's been a decade since her groundbreaking web series, Tropes vs. Women in Video Games, kicked off a firestorm of discussion and criticism around the treatment of female characters. It's been almost as long since Sarkeesian found herself in the eye of the Gamergate storm, where she faced an onslaught of harassment for her efforts. That's because, for Sarkeesian, historical context is important. She hears echoes of Gamergate in modern online harassment and disinformation campaigns, and to not point out those similarities would be remiss. Her new series, That Time When, is a map to the crossroads between pop culture and politics. Over its nine episodes she covers everything from Star Trek to the Satanic Panic of the 1980s, which she investigates in this week's episode. But it culminates with Gamergate, even if it's a period Sarkeesian would like to never revisit. "I didn't just live through this history, I was part of this history," she says. "I'm really tired of talking about it." Hollywood, video games, TV—lots of industries have evolved in the past decade. So have the politics of the day. People now understand media representation better than they did before. But there has also been fallout, like when Obi-Wan Kenobi star Moses Ingram started receiving racist messages on social media following the show's launch, or when Kiki Farms users organized stalking campaigns. These things have precedents. "Moments when pop culture and politics collide are about regressive, puritanical control over women's bodies, over culture, over challenges to the status quo or perceived progressive shifts," Sarkeesian says. That Time When, like Tropes—like all of her work—aims to make those connections. Continued here |
How to find great films to watch | Psyche Guides Most people like movies. After all, 50 years before television became a dominant fixture in many homes, the cinema had established itself as the great popular medium of the 20th century. Some . myself included . go further, and refer to cinema as the previous century's greatest and most popular artform. Others, especially if their experience of movies has been limited to what's available at the local multiplex or what's on offer from Netflix or Disney, might raise an eyebrow at such a claim. Artform? Aren't movies just about entertainment, a distraction from the daily grind? Well, no, not entirely. Continued here |
Women in the Workplace 2022 This is the eighth year of the Women in the Workplace report. Conducted in partnership with LeanIn.Org, this effort is the largest study of women in corporate America. This year, we collected information from 333 participating organizations employing more than 12 million people, surveyed more than 40,000 employees, and conducted interviews with women of diverse identities—including women of color, 1 1. Women of color include Black, Latina, Asian, Native American/American Indian/Indigenous or Alaskan Native, Native Hawaiian, Pacific Islander, Middle Eastern, or mixed-race women. LGBTQ+ women, and women with disabilities—to get an intersectional look at biases and barriers. This research revealed that we’re amid a “Great Breakup.” Women are demanding more from work, and they’re leaving their companies in unprecedented numbers to get it. Women leaders are switching jobs at the highest rates we’ve ever seen—and at higher rates than men in leadership. That could have serious implications for companies. Women are already significantly underrepresented in leadership. For years, fewer women have risen through the ranks because of the “broken rung” at the first step up to management. Now, companies are struggling to hold onto the relatively few women leaders they have. And all of these dynamics are even more pronounced for women of color. Continued here |
A defining moment: How Europe's CEOs can build resilience to grow in today's economic maelstrom A confluence of crises and disruptions has darkened European skies. The energy crisis is already dire and could get worse. The war in Ukraine continues, an unabated humanitarian tragedy. The cost of life’s essentials has gone through the roof—prices in some countries have risen eightfold. Business signs are weakening. In July and August, purchasing managers’ indexes indicated contraction for the first time since early 2021. China, a key supplier and customer, is wrestling with its own economic problems. The effects of climate change are pronounced across the continent, with drought and extreme heat curtailing hydropower and even putting industrial production at risk. The energy crisis threatens to derail the net-zero transition. Semiconductor shortages, technological shortfalls, and labor shortages remain. The latest McKinsey scenarios, undertaken in partnership with Oxford Economics, suggest that European GDP will most likely contract overall in 2023 (Exhibit 1). How will Europe’s business leaders respond? This is a defining moment for a generation of executives who have never been tested in quite this way. Yes, today’s leaders have faced down the global financial crisis, the euro crisis, Brexit, and the COVID-19 pandemic. All were challenging in their way; each crisis called for ingenuity, grit, and determination. Many business leaders met these challenges exceptionally well. But today they face a unique confluence of crises that is of another magnitude. The playbooks of the past will be only moderately helpful. Continued here |
The global opportunity to accelerate Africa's sustainable future Climate justice activist Vanessa Nakate sits down with former president of Ireland Mary Robinson for an enlightening, intergenerational conversation about the state of the climate crisis. Nakate paints a picture of life in her home country of Uganda -- which faces prolonged droughts, landslides and flooding stemming from climate change -- and clarifies the need for energy-rich, high-emitting nations to provide climate finance for Africa and accelerate the continent's sustainable future. "We cannot solve the problems that are happening right now with the very system that created them," Nakate says. "We need something new." Continued here |
This Personalized Crispr Therapy Is Designed to Attack Tumors In a new step for Crispr, scientists have used the gene-editing tool to make personalized modifications to cancer patients’ immune cells to supercharge them against their tumors. In a small study published today in the journal Nature, a US team showed that the approach was feasible and safe, but was successful only in a handful of patients. Cancer arises when cells acquire genetic mutations and divide uncontrollably. Every cancer is driven by a unique set of mutations, and each person has immune cells with receptors that can recognize these mutations and differentiate cancer cells from normal ones. But patients don’t often have enough immune cells with these receptors in order to mount an effective response against their cancer. In this Phase 1 trial, researchers identified each patient’s receptors, inserted them into immune cells lacking them, and grew more of these modified cells. Then, the bolstered immune cells were unleashed into each patient’s bloodstream to attack their tumor. “What we’re trying to do is really harness every patient’s tumor-specific mutations,” says Stefanie Mandl, chief scientific officer at Pact Pharma and an author on the study. The company worked with experts from the University of California, Los Angeles, the California Institute of Technology, and the nonprofit Institute for Systems Biology in Seattle to design the personalized therapies. Continued here |
9 digital marketing tricks that nudge you toward overspending Have you ever noticed the subtle ways your grocery store tries to get you to spend as much as possible? In the aisles, the most expensive products are strategically stocked at eye level. The staple goods are inconveniently located in the very back of the store, forcing you to walk past hundreds of products you probably don’t need just for a gallon of milk. And the most tempting products — glossy magazines and candies — line both sides of the checkout line. These little psychological tricks are designed to get consumers to spend more — without even thinking about it. Online stores have the same goal. Although they can’t use exactly the same strategies, digital marketers have devised a wide variety of ways to nudge customers toward overspending. The user-experience consultant Harry Brignull dubbed these strategies “dark patterns,” referring to subtle design features on websites that prey on our psychology to nudge us toward overspending. Continued here |
Scientists Translate the Oldest Sentence Written in the First Alphabet The oldest sentence written in the world's first alphabet describes a problem that still plagues humans today: head lice. Carved into a tiny ivory comb, the words read: “May this tusk root out the lice of the hair and the beard.” The writing was inscribed in the language of the Canaanites, a group that lived between approximately 3500 and 1150 B.C.E. in what’s now Syria, Jordan, Lebanon, Israel and Palestine. Researchers recently published the translation in the Jerusalem Journal of Archaeology. “The inscription is very human,” co-author Yosef Garfinkel, an archaeologist at the Hebrew University of Jerusalem in Israel who helped direct the excavations, tells the Guardian’s Ian Sample. “You have a comb, and on the comb, you have a wish to destroy lice on the hair and beard. Nowadays we have all these sprays and modern medicines and poisons. In the past they didn’t have those.” Continued here |
Watch Octopuses Throw Things at Each Other Once the researchers pulled the cameras out of the water, they sat down to watch more than 20 hours of footage. “I call it octopus TV,” laughs co-author David Scheel, a behavioural ecologist at Alaska Pacific University in Anchorage. One behaviour stood out: instances in which the eight-limbed creatures gathered shells, silt or algae with their arms — and then hurled them away, propelling them with water jetted from their siphon. And although some of the time it seemed that they were just throwing away debris or food leftovers, it did sometimes appear that they were throwing things at each other. The team found clues that the octopuses were deliberately targeting one another. Throws that made contact with another octopus were relatively strong and often occurred when the thrower was displaying a uniform dark or medium body colour. Another clue: sometimes the octopuses on the receiving end ducked. Throws that made octo-contact were also more likely to be accomplished with a specific set of arms, and the projectile was more likely to be silt. Continued here |
How inflation is flipping the economic script, in seven charts Every morning a new headline underscores growing economic concerns: Highest inflation since the 1970s. Central banks aggressively raising rates. Consumer sentiment at record lows. Commodity prices near all-time highs. Clearly inflation has, at a minimum, altered the economic mood, and potentially reset the path of global and national economies worldwide for years to come. McKinsey’s experts have examined many of the strategic implications of inflation. Here, we use the best and most recent publicly available data to offer seven charts illustrating inflation’s insidious progress. Double trouble. In the past six months, inflation has far exceeded December 2021 expectations. In many countries, actual rates have doubled projections. European countries are particularly affected. For example, inflation in Lithuania is running at 15.5 percent annually, nearly five times the rate expected. Poland is at 11 percent and the United Kingdom at 9 percent, both well above projections. At 3 percent, Switzerland is an outlier. Asia is seeing a less severe change: Indian inflation is about 7 percent, only a bit above projections; and South Korea is at 5 percent. In China and Japan, inflation remains muted. Continued here |
A Guide to Achieving Net Zero Emissions
Many companies are falling short of their carbon pledges. A new guide defines the 4 A’s of what companies must do to deliver on net-zero commitments and avoid accusations of greenwashing. Ambition: Has the company set the right decarbonization targets? Action: Is your company prioritizing the most impactful climate actions? Advocacy: Is your company’s lobbying in line with your climate goals? And accountability: Is your company’s sustainability reporting clear and transparent? Continued here
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