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 S5S20Did Australia's boomerangs pave the way for flight?   The aircraft is one of the most significant developments of modern society, enabling people, goods and ideas to fly around the world far more efficiently than ever before. The first successful piloted flight took off in 1903 in North Carolina, but a 10,000-year-old hunting tool likely developed by Aboriginal Australians may have held the key to its lift-off. As early aviators discovered, the secret to flight is balancing the flow of air. Therefore, an aircraft's wings, tail or propeller blades are often shaped in a specially designed, curved manner called an aerofoil that lifts the plane up and allows it to drag or turn to the side as it moves through the air.
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S26Can a Bad Night's Sleep Trigger a Migraine?  Scientists have found a feedback loop between poor sleep and migraine attacks, and breaking the cycle could be key to treatmentsAnyone who has dealt with migraines knows they’re not mere headaches. These miserable, often debilitating attacks of pain, fatigue and nausea can strike at any time—and nothing makes you want to crawl back into bed more than waking up with one.
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S33Hurricane Otis Came Out of Nowhere to Slam into Mexico  Tropical Storm Otis rapidly intensified into a Category 5 hurricane overnight in a region that has never seen landfall by a storm of such power beforeEvening had already fallen in Acapulco, Mexico, on October 24 when the weather forecast became very grim indeed. What had begun the day as Tropical Storm Otis was unexpectedly now a raging Category 5 hurricane bearing down fast on the city of nearly 800,000 people.
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S35Luis von Ahn: How to make learning as addictive as social media  When technologist Luis von Ahn was building the popular language-learning platform Duolingo, he faced a big problem: Could an app designed to teach you something ever compete with addictive platforms like Instagram and TikTok? He explains how Duolingo harnesses the psychological techniques of social media and mobile games to get you excited to learn — all while spreading access to education across the world.
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S25Depleted Groundwater Could Be Refilled by Borrowing a Trick from Solar Power  In many places around the world, groundwater is being pumped out faster than nature replenishes it. A new model points to a possible solutionPajaro Valley on the coast of central California has little surface water, so its farmers depend on extracting groundwater to grow leafy greens and berries for the global market. But as in many places around the world, these farmers have been pumping the water out faster than nature can replenish it. In different places, groundwater decline can cause various impacts: it can make land sink, streams, wetlands, and wells dry up and seawater creep inland under the ground. And because most pumped groundwater irrigates crops, major declines in availability could lead to a global food crisis.
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S27The World Solved Acid Rain. We Can Also Solve Climate Change  The world feels like it’s being set alight; wildfires in Canada and Europe, floods in China, and a never-ending stream of recording-breaking heat waves have garnered numerous headlines.The feeling that time is quickly running out is very real. And it’s easy to believe that the world cannot tackle big environmental problems. This sense of helplessness is something that I have personally battled for more than a decade. But that feeling is a barrier to action: Nothing has changed when we’ve called for action before, so why should we expect any different this time?
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S24Cosmetics resale in Brazil: The Uber driver running a beauty store from his car  Renan Gimenez is always trying to perfect his sales pitch. As an Uber driver in São Paulo, Brazil’s largest city, that’s not exactly required of him. But Gimenez also resells perfumes and other cosmetics products during his Uber rides. His car is his shop on wheels, and every ride is an opportunity. Gimenez started his cosmetics side gig eight years ago. In the early days, he delivered his orders on motorcycle, and switched to a car two years later. Owning a car also allowed him to work as an Uber driver. He now works six days a week, taking Sundays off to spend time with his wife and three kids.
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S19Message sticks: Australia's ancient unwritten language  The continent of Australia is home to more than 250 spoken Indigenous languages and 800 dialects. Yet, one of its linguistic cornerstones wasn't spoken, but carved.Known as message sticks, these flat, rounded and oblong pieces of wood were etched with ornate images on both sides that conveyed important messages and held the stories of the continent's Aboriginal people – considered the world's oldest continuous living culture. Message sticks are believed to be thousands of years old and were typically carried by messengers over long distances to reinforce oral histories or deliver news between Aboriginal nations or language groups.
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S32'Robo-Taxi Takeover' Hits Speed Bumps  Self-driving cars are expanding their ranges in a handful of U.S. cities, but the reality doesn’t yet match the hypeEditor’s Note (10/25/23): This article from September 8 reported on the expansion of self-driving car services after two companies, Cruise and Waymo, received permission to run driverless taxis in San Francisco. Yesterday the California Department of Motor Vehicles suspended Cruise’s driverless testing permits after an incident earlier this month in which a Cruise autonomous vehicle ran over a pedestrian who had previously been struck by another car.
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S145 Questions to Get Your Project Team on the Same Page  Projects are unique, temporary, and dynamic. At the beginning of a project, you can be proactive as you plan, schedule, source, and staff. But the process will invariably shift and become more reactive as you respond to challenges along the way. Project success ultimately depends on maintaining project team alignment from inception to completion. That can only happen when a project manager consistently realigns the team throughout the project. The author presents five questions every project manager should periodically ask their teams to create and maintain alignment.
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S29Does Humanity Have to Eat Meat?  Humans have been around for about 2.5 million years. For at least 2.4 million years, people have been eating animals. This fact is evidenced by cut traces on fossil animal bones, surviving stone tools and analyses of our ancestors' teeth. While Homo habilis and Homo rudolfensis probably only ate a lizard here and there or the meaty remains left behind by other predators, Homo erectus was a hunter. Today, by some counts, the average American eats around 7,000 animals in a lifetime—including 4,500 fish, 2,400 chickens, 80 turkeys, 30 sheep, 27 pigs and 11 cows. This number not only sounds absurdly high; it raises a question: Is this really necessary?According to one well-known theory meat consumption made us human. As early as the mid-1950s, paleoanthropologist Raymond Dart coined the idea that our early ancestors hunted animals to survive on the barren African savannah. Finally, in the 1990s, Leslie Aiello and Peter Wheeler posed the expensive-tissue hypothesis, according to which other tissues had to regress as the human brain evolved. They wanted to answer the question of where early hominins got the energy for their ever-growing organ of thought. While the brain volume of Homo rudolfensis was still about 750 cubic centimeters, Homo erectus already had up to 1,250 cubic centimeters. Today, Homo sapiens even has a brain volume of 1,100 to 1,800 cubic centimeters.
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S36Want a Better PC? Try Building Your Own  Almost everyone uses computers, but we never really get into the guts of how they work. Sometimes it’s nice to make something with your own hands that you'll use every day. That’s what this guide is about: how to build a PC from parts.This can be daunting for a lot of reasons—it’s expensive, it’s complex, it can get messy. But I want to be clear: If you can build an Ikea table, bookshelf, bed, or anything that comes in more than one of those deceivingly heavy flat packs, you can build a PC. The tricky part? I can't tell you how to build your PC. Not really. Not unless I know exactly which hardware you're using. I can, however, explain what each component does and what my recommendations are for each category.
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S8S68Photos: Destruction in Gaza  Today is the 19th day of Israeli air strikes across the Gaza Strip, following the surprise attacks by Hamas on October 7 that left 1,400 people dead in Israel and more than 200 taken hostage. Thousands more civilians have been killed and injured in the subsequent hostilities, as a humanitarian crisis grows in Gaza and Israel prepares for a ground invasion. Collected below are images from Gaza taken over the past five days, where Palestinians are working with few resources to tend to those displaced, rescue those trapped, help the injured, and bury their dead. A Palestinian man mourns as civil-defense teams and residents search for people trapped under the debris of a demolished building following Israeli airstrikes that hit the Al-Shati refugee camp, in Gaza City, Gaza, on October 24, 2023. #
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S28The Tale of the Rotifer That Came Back to Life after 25,000 Years in an Icy Tomb  Can something spring back to life if it last moved around when woolly mammoths roamed the earth? The answer appears to be yes.What has one head, one foot and one heck of an origin story? No, it’s not a strange new superhero. It’s a microscopic worm called a rotifer that was brought back to life after spending about 25,000 years locked in the arctic permafrost. Its tale is told in the journal Current Biology. [Shmakova et al., A living bdelloid rotifer from 24,000-year-old Arctic permafrost.]
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S51S21The surprisingly subtle ways Microsoft Word has changed the way we use language  For 40 years there’s been an invisible hand guiding the way many of us write, work, and communicate. Its influence has been pervasive, yet its impact has been subtle to the extent that you’ve likely never noticed. That invisible hand is Microsoft Word.At its launch in October 1983, this influential software was known as Multi-Tool Word, and not long after, changed to Microsoft Word for Dos. Back then, there were more than 300 word processing programs across multiple platforms. People of a certain age will remember WordStar or WordPerfect, yet in a little over a decade Word eclipsed these rivals. By 1994, Microsoft says it had claimed a 90% share of the word-processing market, making it one of the most successful, well-known software products in history.
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S23Signal President Meredith Whittaker on resisting government threats to privacy  Just over a year ago, Meredith Whittaker stepped into the role of president of the Signal Foundation — and from the beginning, she has been dealing with political threats to encryption.The foundation’s flagship product, the Signal messaging app, has drawn in users with its default end-to-end encryption and an uncompromising stance on privacy. But those same features have also made it a target. Governments in China, Egypt, Cuba, Uzbekistan and, most recently, Iran have banned Signal outright. In the U.K., recently passed legislation could target messenger services and require an app like Signal to moderate harmful content such as terrorist content or child abuse imagery. To find that content, Signal would need access to user conversations, which would mean breaking the service’s end-to-end encryption. Similar bills have already been passed in India and proposed in Brazil. Whittaker doesn’t mince words, calling such laws an existential threat to Signal.
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S30Astronomers May Have Witnessed Worlds in Collision  A planet-vaporizing impact is the leading explanation for a distant star’s curiously fluctuating lightLong ago, around an otherwise unremarkable faraway star, two infant planets had an extraordinarily bad day. The two collided in a giant impact that brought both to a violent end. Where once these worlds had twirled, the cataclysm left behind only a diminished molten lump and a churning 10-million-kilometer-wide cloud of incandescent vapor and pulverized debris that should eventually condense into a new, second-generation planet.
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S18Taupo: The super volcano under New Zealand's largest lake  Located in the centre of New Zealand's North Island, the town of Taupo sits sublimely in the shadow of the snow-capped peaks of Tongariro National Park. Fittingly, this 40,000-person lakeside town has recently become one of New Zealand's most popular tourist destinations, as hikers, trout fishers, water sports enthusiasts and adrenaline junkies have started descending upon it.The namesake of this tidy town is the Singapore-sized lake that kisses its western border. Stretching 623sq km wide and 160m deep with several magma chambers submerged at its base, Lake Taupo isn't only New Zealand's largest lake; it's also an incredibly active geothermal hotspot. Every summer, tourists flock to bathe in its bubbling hot springs and sail through its emerald-green waters. Yet, the lake is the crater of a giant super volcano, and within its depths lies the unsettling history of this picturesque marvel.
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S22Why aliens might already know that humans exist  We've been searching the heavens for some time now. But despite decades of listening for tell-tale radio signals and hunting for signs that other worlds might be even vaguely habitable, it's been slim pickings so far. While astronomers have identified a few possible candidates for where life might conceivably exist elsewhere in the Universe, along with the odd mysterious signal, there is yet to be any concrete evidence of alien life out there.This article is part of a week of special coverage about aliens – all to mark the upcoming 60th Anniversary of the BBC's most famous alien lifeform, Doctor Who.
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S39The Best Galaxy S23 Cases and Accessories  If you buy something using links in our stories, we may earn a commission. This helps support our journalism. Learn more. Please also consider subscribing to WIREDSamsung phones are among the best Android handsets, and the Galaxy S23 series is no exception. They're priced to match, which is why it's important to protect your investment, whether you have the Galaxy S23, Galaxy S23+, or Galaxy S23 Ultra. Sure, Samsung utilizes Corning's Gorilla Glass Victus 2 around the device, but glass is still glass, and a single drop could be all it takes to crack the screen.
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S9S62'You Started a War, You'll Get a Nakba'  Since the Hamas attack, settler violence against Palestinians has intensified in the West Bank.Last week, on a dusty road in the West Bank, I received a phone call from the office of the spokesperson of the Israel Defense Forces to schedule a meeting the next day. “Hello,” I said. “It’s difficult to talk right now. I am being menaced by two men with knives.”
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S13S16How to Bring an Outside CEO into the Family Business  One of the challenges for a family-owned business is the transition to a non-family member as CEO — a transition most multigenerational businesses eventually face. Onboarding the new CEO is one piece of this challenge. To help make the onboarding successful, use a five-step process, consisting of one-month stages: learn, listen, observe, own, and evaluate.
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S7S37How to Use ChatGPT's 'Browse With Bing' Tool--Plus 6 Starter Prompts  OpenAI recently made two big adjustments to ChatGPT. People who pay for the company's $20-a-month ChatGPT Plus subscription can now prompt it to browse the internet, although ChatGPT is locked into Bing's search engine. Subscribers can also ask the chatbot to create images using Dall-E 3 in beta.This isn't the first time OpenAI enabled its AI tool to browse the web. Earlier in 2023, subscribers could use web browsing for ChatGPT, labeled as "Browse With Bing." The beta feature was pulled by OpenAI after users discovered that the chatbot could slip behind online paywalls.
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S31We Are Racing Toward Earth's Catastrophic Tipping Points  Temperatures are skyrocketing. Extinctions are accelerating. Groundwater is being depleted. Humanity can limit damage, but it will take collective global actionCLIMATEWIRE | Human activities are sending the planet hurtling toward a series of dangerous tipping points, scientists warn. The world is approaching thresholds of no return as temperatures rise, water resources shrink, plants and animals go extinct and humanmade materials accumulate in natural systems.
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