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Scientists have developed a "self-digesting plastic", which, they say, could help reduce pollution. Polyurethane is used in everything from phone cases to trainers, but is tricky to recycle and mainly ends up in landfill. However, researchers have come up with a sci-fi like solution. By incorporating spores of plastic-eating bacteria they've developed a plastic that can self-destruct. The spores remain dormant during the useful lifetime of the plastic, but spring back to life and start to digest the product when exposed to nutrients in compost. There's hope "we can mitigate plastic pollution in nature", said researcher Han Sol Kim, of the University of California San Diego, La Jolla. And there might be an added advantage in that the spores increase the toughness of the plastic. "Our process makes the materials more rugged, so it extends its useful lifetime," said co-researcher, Jon Pokorski. "And then, when it's done, we're able to eliminate it from the environment, regardless of how it's disposed." The plastic is currently being worked on at the laboratory bench but could be in the real world within a few years, with the help of a manufacturer, he added. The type of bacteria added to the plastic is Bacillus subtilis, widely used as a food additive and a probiotic. Crucially, the bacteria has to be genetically engineered to be able to withstand the very high temperatures needed to make plastic.
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At first glance there's nothing particularly remarkable about waxworms. The larval form of wax moths, these pale wriggling grubs feed on the wax that bees use to make their honeycomb. For beekeepers, the pests are something to swiftly get rid of without a second thought. But in 2017 molecular biologist Federica Bertocchini ... stumbled on a potentially game-changing discovery about these creatures. Bertocchini, an amateur beekeeper, threw some of the waxworms in a plastic bag after cleaning her hive, and left them alone. A short time later, she noticed the worms had started producing small holes in the plastic, which begun degrading as soon as it touched the worms' mouths. The worms were doing something that we as humans find remarkably difficult to do: break down plastic. Not only that, but the worms appeared to be digesting the plastic as though it was food. Bertocchini and her fellow researchers began collecting the liquid excreted from the worms' mouths. They found this "saliva" contained two critical enzymes, Ceres and Demeter – named after the Roman and Greek goddesses of agriculture, respectively – which were able to oxidise the polyethylene in the plastic, essentially breaking down that material on contact. Bertocchini is now chief technology officer at bioresearch startup Plasticentropy France, working with a team to study the viability of scaling up these enzymes for widespread use in degrading plastic.
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Humans have created 8 billion metric tons of plastic. More than half the plastic ever produced –some 5 billion metric tons – lies smeared across the surface of the Earth. Chemists were creating "synthetic" plastics decades before the oil industry took off, from, among other materials, waste oat husks and vegetable oil. One of the tacks toward more sustainable plastics is to turn back to such biological sources. The ideal materials are not just biodegradable but also compostable – a narrower category that indicates the material can break down into organic components that are harmless to plants and animals. Compostability, unfortunately, is not easily achieved. The natural world already supplies promising polymers that are all compostable, says David Kaplan, a biomedical engineer at Tufts University. [Physicist Eleftheria] Roumeli, for example, has mined the promise of algal cells. They're small, and therefore easily manipulable; they contain large amounts of proteins, which are biological polymers, alongside other useful materials. She and her students took powdered algae and passed it through a hot presser. After several trials ... they found they could produce a material that was stronger than many commodity plastics. The material was also recyclable: It could be ground back to powder and pressed again. If it were to be carelessly tossed into the dirt, the material would break apart at the same rate as a banana peel.
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On a late-November afternoon, at the head of a cramped classroom, David Carrillo stood at a small podium and quizzed 17 students on macroeconomic terminology. For the two-hour class, Carrillo, the adjunct professor teaching for Adams State University, mostly kept his hands in his pockets as he lectured students in green uniforms. Like his students at the Colorado Territorial Correctional Facility, Carrillo, 49, also wears green. He holds a position that is extremely rare in prison: He's an incarcerated professor teaching in a prison bachelor's degree program. A new initiative at Adams State – one of the first of its kind in the country – focuses on employing incarcerated people with graduate degrees as college professors, rather than bringing in instructors from the outside. Most people in Colorado prisons only make 80 cents a day, so it would take them around 17 years to earn the $3,600 that Carrillo gets for a single class. Higher wages help incarcerated individuals build savings to help cover their basic needs when they are released. Poverty can often be a driver of decisions that land people back in prison. Adams State hopes to eventually employ more graduates of their own programs in the future. Currently ... around 100 people in prisons across the country are working towards their MBA through Adams State like Carrillo did. The 36-credit print-based MBA correspondence program costs $350 per credit for a total of $12,600, plus textbooks.
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Since 2017 the U.S.-based charity GiveDirectly has been providing thousands of villagers in Kenya what's called a "universal basic income" – a cash grant of about $50, delivered every month, with the commitment to keep the payments coming for 12 years. This week a team of independent researchers who have been studying the impact released their first results. Their findings ... compare the outcomes for about 5,000 people who got the monthly payments to nearly 12,000 others in a control group who got no money. The researchers also compared the recipients to people in two other categories: nearly 9,000 who received the monthly income for just two years; and another roughly 9,000 people who got that same two years' worth of income but in a lump-sum payment. When it came to measures of well-being such as consumption of protein or spending money on schooling, all of the groups who were given cash were better off than people in the control group that got no money. Those who got the money in a lump sum vastly outperformed people who were promised the same amount for just two years but received it in monthly installments. Lump-sum recipients had 19% more enterprises – businesses such as small shops in local markets, motorbike taxis and small-scale construction concerns. And the lump sum recipients' net revenues from their businesses were a whopping 80% higher. The grants did not seem to fuel inflation.
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Whether revealed in a post on social media, a short video on TikTok, or the latest piece of news on Fox or NBC, it is hard to ignore political divisions in the U.S. We ... conducted a survey of over 2,400 Republicans and Democrats in the lead-up to the 2020 presidential elections. We included questions about each person's moral and sociopolitical attitudes and beliefs. We found considerable similarity in their moral and political attitudes. At least 75% of responses overlapped. Both groups endorsed the importance of considering how fair or harmful their actions are for others, and they both believed that upholding democracy and finding bipartisan solutions is important for the U.S. In a series of subsequent experiments involving more than 4,400 participants, we presented our findings to people who had not participated in the survey. Participants all saw the same findings, but they were randomly assigned to see the information described in different ways. For some participants, our results were described as showing small differences between Democrats and Republicans, whereas for others they were described as showing a high degree of similarity between the two groups. When findings were described as showing similarities, participants thought that their political opponents had attitudes and beliefs that were more similar to their own group. They were more willing to find common ground with their political opponents on major social issues like gun control and abortion. Focusing on group differences might inadvertently contribute to political tension.
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Duberney López Martinéz was only 13 when he joined the Revolutionary Armed Forces of Colombia (FARC) in 2003. Today, Duberney, 33, lives with his wife and young son after spending more than a decade fighting in the FARC 32nd Front and two years in jail. As part of his reintegration into society ... Duberney got involved in the ecological restoration of the Colombian Amazon. He and another 23 ex-FARC members are promoting the ecological restoration of the Colombian Amazon. The Communitarian Multiactive Cooperative of the Common (Comuccom) ... aims to plant and care for 1 million native trees in order to counteract deforestation from illegal gold mining, cattle ranching, coca-growing and illegal logging. Despite the peace agreement, the conflict is still present in daily lives and memories, according to Kristina Lyons, professor of anthropology ... who has been working in the region. "In Putumayo, armed conflict and antidrug policies heavily impacted bonds among people, communities and their relations with the region's ecosystems," Lyons [said]. "The ecological restoration of the Amazon has deep significance for healing relations between humans ruptured by the conflict and among people and their territories. It can be understood as a form of reparation for war crimes and other kinds of violence in the wake of the peace agreements." "To me, restoring the Amazon is the same process needed for healing the heart of a person," [said Aroca Sanchez with Comuccom].
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A growing women-led restorative justice system ... operates within the territory of the Autonomous Administration of North and East Syria (AANES), also known as Rojava, a revolutionary social experiment involving more than 4.5 million people. The system features a network, autonomous from the AANES, of more than 60 Mala Jin, or "women's houses," which allow people to solve disputes at the community level, instead of through courts or police, by offering reconciliation and mediation processes for domestic and family situations. Activist and independent researcher Clara Moore ... recently returned from spending two years in the region, working at both the Rojava Information Center and at Mala Jin. "Essentially, they're trying to build a system around the political philosophy of Democratic Confederalism, which was initially inspired by the ideas of [the American intellectual] Murray Bookchin and theorized by [Kurdish leader] Abdullah Ă–calan from prison in Turkey," [said Moore]. "It's based on ideas of pluralism, direct democracy, decentralization, gender equality and self-defense. In practice, this means that all communities have the ability and right to defend themselves and provide for their own needs. The idea of the justice system in Rojava, in North and East Syria in general, is that it's possible to solve a dispute without going to court. There are laws in Rojava and courts. Ideally, those only become relevant when people can't come to a resolution together outside of court."
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Economists love things they can measure objectively, like the number of deaths in a village or the number of dollars in an account. So over the past century, they've focused on measuring health and wealth. The best policy programs for society are deemed to be the ones that save the most lives, say, or increase gross domestic product (GDP) by the widest margin. And there's a good rationale for using a metric like GDP as a shorthand for well-being: There is a very high correlation between a nation's GDP per capita and its self-reported life satisfaction. But a strong predictor is not a perfect predictor. As we've gathered more data on the happiness of different populations, it's become clear that increasing wealth and health do not always go hand in hand with increasing happiness. By the economists' objective measures, people in rich countries like the US should be doing great – and yet Americans are only becoming more miserable. A growing chorus of experts argues that helping people is ultimately about making them happier – not just wealthier or healthier – and the best way to find out how happy people are is to just ask them directly. It's a revolution in thinking that's gathering force in policy and charity circles alike, and it's starting to upend conventional wisdom about the best ways to do good. Part of the virtue of the subjective approach is that people can bring whatever matters to them into their assessments. So, how much meaning you have in your life could be an input into that.
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If you were to imagine the first car-free neighborhood built from scratch in the modern US, it would be difficult to conceive such a thing sprouting from the environs of Phoenix, Arizona. But it is here that such a neighborhood, called Culdesac, has taken root. On a 17-acre site ... an unusual experiment has emerged that invites Americans to live in a way that is rare outside of fleeting experiences of college, Disneyland or trips to Europe: a walkable, human-scale community devoid of cars. Culdesac ushered in its first 36 residents earlier this year and will eventually house around 1,000 people. Residents are provided no parking for cars and are encouraged to get rid of them. The apartments are also mixed in with amenities, such as a grocery store, restaurant, yoga studio and bicycle shop, that are usually separated from housing by strict city zoning laws. The $170m Culdesac project shows "we can build walkable neighborhoods successfully in the US," according to Ryan Johnson, the 40-year-old who co-founded the company. "We look back nostalgically at college, because it's the only time most people have lived in a walkable neighborhood. People are happier and healthier, and even wealthier when they're living in a walkable neighborhood." Vanessa Fox, a 32-year-old who moved into Culdesac with her husky dog in May, had always wanted to live in a walkable place only to find such options unaffordable. For her, Culdesac provided a sense of community without having to rely on a car.
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In 1968, at the age of 42, psychiatrist Robert Jay Lifton sat down to write Death in Life, a book about his experiences interviewing survivors of the atomic bombings of Hiroshima and Nagasaki. Over the course of his career, Lifton studied not only survivors of the atomic bombings but Auschwitz survivors, Vietnam war veterans and people who'd been subjected to repression by the Chinese government. The COVID pandemic prompted him to reflect on what he'd learned about mass trauma and resilience – that telling stories about trauma, and even trying to influence policy, can often help people recover. Now 97, Lifton has just published his 13th book, Surviving Our Catastrophes: Resilience and Renewal from Hiroshima to the Covid-19 Pandemic. "I interviewed people who had undergone the most extreme kind of trauma and victimization," [said Lifton]. "And yet some of the very same people who had so suffered from trauma have shown what I call "survivor wisdom" – they transformed themselves from helpless victims to agents of survival. If ... storytelling can include the transformation from the helpless victim to the life-enhancing survivor, then the storytelling is crucial. The storytelling we most encourage is that kind that enables the formerly helpless victim to be transformed in the story, to transform himself or herself, collectively transform themselves into life-affirming survivors. That's the key transformation, and that's the story we [listeners] seek to help them achieve."
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Dead flies could be turned into biodegradable plastic, researchers have said. The finding, presented at the autumn meeting of the American Chemical Society (ACS), could be useful as it is difficult to find sources for biodegradable polymers that do not have other competing uses. "For 20 years, my group has been developing methods to transform natural products – such as glucose obtained from sugar cane or trees – into degradable, digestible polymers that don't persist in the environment," said the principal investigator, Karen Wooley. A colleague suggested she could use waste products left over from farming black soldier flies. The larvae of the flies contain proteins and other nutritious compounds so are being raised for animal feed. However, adult flies are less useful and are discarded. Wooley's team has been trying to use these carcasses to make useful materials from a waste product. The researchers found that chitin, a sugar-based polymer, is a major component of the flies and it strengthens the shell, or exoskeleton, of insects and crustaceans. From the fly products, the team created a hydrogel that can absorb 47 times its weight in water in just one minute. This product could be used in cropland soil to capture flood water and then slowly release moisture during droughts. The scientists hope they will soon be able to create bioplastics such as polycarbonates or polyurethanes, which are traditionally made from petrochemicals, from the flies. These plastics will not contribute to the plastic pollution problem.
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A legacy of poverty, genocide and dictatorship left Zimbabwe struggling with an epidemic of depression, colloquially known as kufungisisa, or â€thinking too much'. Known as â€gogos' (elder women) or â€ambuya utano' (community grannies), these Zimbabwean community health workers (CHWs) have a record in treating mild to moderate anxiety and depression that beats many traditional talking therapies and pharmacological interventions. Meet the Friendship Bench grandmothers of Zimbabwe. Founded in 2007, the Friendship Bench project has treated 280,000 people in its 16 years of existence, in 70 communities across Zimbabwe and at spin-off projects in Malawi, Kenya and most recently Zanzibar and Vietnam. In 2024 it will arrive in London, with a series of Friendship Benches set to be installed in the city's most marginalised communities. "Whether it's London, New York or Zimbabwe, everywhere the issues are similar," Friendship Bench founder, Harare-based psychiatrist Dr Dixon Chibanda tells Positive News. "There are issues related to loneliness, access to care, and to just being able to know that what you're experiencing – whether you call it stress or depression or anxiety – is treatable." Most of the therapists are older women, who are traditionally turned to for counsel in Zimbabwean culture. The women are trained in the basics of cognitive behavioural therapy [CBT] and allocated a park bench in their communities.
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Destruction in the Amazon is, once again, approaching an all-time high. Some 335 square miles of rainforest were felled in the first three months of 2023 alone, the second worst quarter in the last 16 years. In 2015, the Munduruku [Indigenous people] had long been fighting the extractive industries encroaching on their land. But this was the first time Korap Munduruku, a 38-year-old teacher and mother of two whose face and body are often painted with traditional geometric designs of her people, decided to take a stand and join them. "So our rights are being violated. Everything going on here is wrong," she recalls saying at the meeting. "We need to do something about it. We can't just sit here and do nothing." The next meeting was with her chief and other leaders from the wider community – there are more than 13,000 Munduruku in Brazil. She eventually left the classroom to take up the fight for land rights full-time. Before long she learned that Anglo American, one of the world's largest mining companies, had applied to extract copper on Sawr© Muybu, a Munduruku territory next to her own. That information and the fight that she would lead against the developers led Korap Munduruku to become one of six recipients of the prestigious 2023 Goldman Environmental Prize, which honors grassroots environmental activists. She built a coalition of other Munduruku and, along with 45 chiefs and 200 other participants, published a declaration in December 2020 opposing mining and deforestation in the Amazon.
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A new book, Your Brain on Art, by Susan Magsamen and Ivy Ross, helps explain ... the science of "neuroaesthetics"–how our brains respond to aesthetic and artistic experiences. The authors make the case that art is good for our physical and mental health. Appreciating or making art involves using many parts of our brain–from those that process our senses to those involved in emotion, memory, and cognition. "When you experience virtual reality, read poetry or fiction, see a film or listen to a piece of music, or move your body to dance, to name a few of the many arts, you are biologically changed," write Magsamen and Ross. "There is a neurochemical exchange that can lead to what Aristotle called catharsis, or a release of emotion that leaves you feeling more connected." One study involving more than 23,000 ... participants found that those who either made art at least once a week or attended cultural events at least once or twice a year were happier and had better mental health than those who didn't. This was independent of their age, marital status, income, health behaviors, social support, and more. "The arts are being used in at least six distinct ways to heal the body: as preventative medicine; as symptom relief for everyday health issues; as treatment or intervention for illness, developmental issues, and accidents; as psychological support; as a tool for successfully living with chronic issues; and at the end of life to provide solace and meaning," the authors write.
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Washington State prisoners were recently forced to gather in a janitor's closet to organize and facilitate college education for people incarcerated in several prisons across the state. New official restrictions are jeopardizing a liberating, prisoner-led program known as Taking Education And Creating History, or TEACH. TEACH's goal is to democratize education for people with long sentences. Between community support and financial backing outside the correctional system, TEACH successfully circumvented the Department of Corrections, or DOC, policy of excluding long-term prisoners from education. Since 2013, over 300 incarcerated individuals across three state prisons have become college students. Progressively, TEACH began breaking down barriers between various racial and cultural groups – contradicting administrative beliefs that the Black Prisoners Caucus would further racial tension. Prisoners who would've never interacted with one another were now sitting at tables thumbing through books, while preparing for exams. When asked how TEACH has impacted the prison environment, Darrell Jackson, co-chair of the TEACH program at Washington Correction Center, said, "It has reduced the violence in prison, while creating a positive educational community for everyone – regardless of one's crime, race or affiliation." He added, "Those with lengthy sentences were given a sense of purpose, something that many are stripped of when they enter into prison."
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Every weekday at 5280 High School in Denver starts the same way. Students in recovery from drug and alcohol addiction gather on the steps of the school's indoor auditorium to discuss a topic chosen by staff members. One recent morning, they talked about mental health and sobriety. The students attend Colorado's only recovery high school – one of 43 nationwide. These schools are designed for students who are recovering from substance use disorder and might also be dealing with related mental health disorders. Compared with their peers at regular schools who have gone through treatment, recovery high school students have better attendance and are more likely to stay sober, and their graduation rate is at least 21% higher, according to one study. Recovery high schools often weave components of treatment into the school day – activities like 5280's daily recovery program meeting. In the afternoon, the school offers wellness electives such as spiritual principles and journaling. The school also employs a director of recovery and recovery coach to work with and counsel the students individually. "The No. 1 step is just letting them know out of the gate, no matter what's going on, that we love them," said Brittany Kitchens, the school's recovery coach. "We are here for them." Kitchens teaches students how to navigate recovery and regulate their emotions. She likens herself to a hall monitor, constantly checking in with students and looking for changes in behavior.
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The food served at the suburban San Francisco school system, Mount Diablo Unified, reflects a trend away from mass-produced, reheated meals. Its lunch menus are filled with California-grown fruits and vegetables, grass-fed meats and recipes that defy the stereotype of inedible school food. Among American schoolchildren, these students are in the lucky minority. Making fresh meals requires significant investment and, in many areas, an overhaul of how school kitchens have operated for decades. What's more, federal money to boost lunch budgets has declined. The government last year ended a pandemic-era program offering free school meals to everyone. A few states, such as California, have been paying to keep meals free for all students, but most states went back to charging all but the neediest kids for meals. Increases in money from California's state government have made it possible for Mount Diablo to buy fresher local ingredients and hire the chef, Josh Gjersand, a veteran of Michelin-starred restaurants. Local farms, bakers, creameries and fishermen now supply most ingredients to the district, which serves 30,000 students from wealthy and low-income communities east of San Francisco. Making food from scratch isn't just healthier, it's cheaper, many school nutrition directors say. In 2021, California committed to spending $650 million annually to supplement federal meal reimbursements – money for food, staff, new equipment and other upgrades.
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Here in the Kibera slum, life sometimes seems a free-for-all. Yet this is an uplifting slum. Kennedy [Odede] taught himself to read ... then formed a Kibera self-help association called Shining Hope for Communities, better known as SHOFCO. Let's just acknowledge that development is hard, particularly in urban slums that are growing fast around the world. Billions of dollars are poured into the poorest countries, and in Haiti and South Sudan one sees fleets of expensive white S.U.V.s driven by aid organizations; what's missing is long-term economic development. International aid keeps children alive, which is no small feat. But it has had less success in transforming troubled places. That's where SHOFCO is intriguing as an alternative model. "Development has been part of imperialism – you know better than anybody else because you're from America or Europe," Kennedy [said]. He thinks international aid sometimes is ineffective partly because it feels imposed by the outside. SHOFCO has spread through low-income communities across Kenya and now boasts 2.4 million members, making it one of the largest grass-roots organizations in Africa. It provides clean water, fights sexual assault, runs a credit union, coaches people on starting small businesses, runs libraries and internet hot spots, mobilizes voters to press politicians to bring services to slums, runs public health campaigns and does 1,000 other things. It exemplifies a partnership: local leadership paired with a reliance on the best international practices.
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In the year since Donna Bruce started working at the Baltimore public library's Penn North branch, she has connected more than 400 visitors to housing programs, food assistance and substance abuse recovery options – and saved a man from dying of a drug overdose by administering the emergency treatment Narcan. Poverty is pervasive in the neighborhoods around the Penn North library, and many people come in simply looking for heat or shelter. Bruce is leading a team of "peer navigators" in the library system trained to provide trauma-informed engagement and support to the public. All navigators have personal experience with mental health challenges or substance abuse disorders and act as role models in the community. Peer Navigators is the first city agency program that owes part of its origin story to Baltimore's 2020 Elijah Cummings Healing City Act. The goal of the groundbreaking legislation is to help departments reckon with and change policies that have caused – and continue to cause – trauma, while charting a new path rooted in healing. The act mandates that city employees receive training, to gain awareness and learn how to help those who have been harmed. At the same time, agency leaders must evaluate their practices and procedures to determine if they are causing trauma and how to change those that are to better serve Baltimore's communities. Evidence shows the approach can improve social environments, decrease violence, and reduce other negative encounters.
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