https://www.sciencedaily.com/news/science_society/transportation_issues/ Mass transit proposals, solar collectors from asphalt roads, ideas for efficient travel. Read about scientific research and policies on a range of transportation ideas and issues. en-us Fri, 17 Apr 2026 09:16:31 EDT Fri, 17 Apr 2026 09:16:31 EDT 60 https://www.sciencedaily.com/images/scidaily-logo-rss.png https://www.sciencedaily.com/news/science_society/transportation_issues/ For more science news, visit ScienceDaily. https://www.sciencedaily.com/releases/2026/03/260307213350.htm Satellites are giving scientists a powerful new way to watch over the world’s bridges. Using radar imaging, researchers can detect millimeter-scale movements that may signal early structural problems long before inspectors notice them. The study found many bridges—especially in North America—are aging and increasingly vulnerable, but satellite monitoring could sharply reduce the number classified as high-risk. The approach could be especially valuable in regions where traditional monitoring barely exists. Sun, 08 Mar 2026 06:38:15 EDT https://www.sciencedaily.com/releases/2026/03/260307213350.htm https://www.sciencedaily.com/releases/2025/12/251221043218.htm A major international review has upended long-held ideas about how top performers are made. By analyzing nearly 35,000 elite achievers across science, music, chess, and sports, researchers found that early stars rarely become adult superstars. Most world-class performers developed slowly and explored multiple fields before specializing. The message is clear: talent grows through variety, not narrow focus. Sun, 21 Dec 2025 10:05:31 EST https://www.sciencedaily.com/releases/2025/12/251221043218.htm https://www.sciencedaily.com/releases/2025/11/251129044502.htm Five hundred years ago, a Bible accidentally printed with a backwards map of the Holy Land sparked a revolution in how people imagined geography, borders, and even nationhood. Despite the blunder, the map reshaped the Bible into a Renaissance book and spread new ideas about territorial organization as literacy expanded. Over time, sacred geography evolved into political boundary-making, influencing not only early modern thought but modern attitudes about nation-states. Sun, 30 Nov 2025 09:01:30 EST https://www.sciencedaily.com/releases/2025/11/251129044502.htm https://www.sciencedaily.com/releases/2025/11/251126095041.htm Researchers studying Classic Maya cities discovered that urban growth was driven by a blend of climate downturns, conflict, and powerful economies of scale in agriculture. These forces made crowded, costly city life worthwhile for rural farmers. But when conditions improved in the countryside, people abandoned cities for more autonomy and better living environments. The story turns out to be far more complex than drought alone. Wed, 26 Nov 2025 10:49:20 EST https://www.sciencedaily.com/releases/2025/11/251126095041.htm https://www.sciencedaily.com/releases/2025/11/251102011219.htm Spacetime isn’t something that exists; it’s a model for describing how events happen. Treating events as objects creates philosophical confusion and fuels misconceptions, such as time-travel paradoxes. Recognizing that events merely occur within an existing world brings clarity to physics and philosophy alike. Sun, 02 Nov 2025 01:12:19 EDT https://www.sciencedaily.com/releases/2025/11/251102011219.htm https://www.sciencedaily.com/releases/2025/10/251005085635.htm Despite massive technological and industrial changes, American cities have stayed remarkably coherent in how their economies fit together. This hidden order governs how cities diversify, grow, and reinvent themselves without losing their economic identity. Sun, 05 Oct 2025 08:56:35 EDT https://www.sciencedaily.com/releases/2025/10/251005085635.htm https://www.sciencedaily.com/releases/2025/10/251005085621.htm Over 40% of fatal crash victims had THC levels far above legal limits, showing cannabis use before driving remains widespread. The rate didn’t drop after legalization, suggesting policy changes haven’t altered risky habits. Experts warn that the lack of public awareness around marijuana’s dangers behind the wheel is putting lives at risk. Sun, 05 Oct 2025 08:56:21 EDT https://www.sciencedaily.com/releases/2025/10/251005085621.htm https://www.sciencedaily.com/releases/2025/09/250923021204.htm NASA has chosen 10 new astronaut candidates who will train for missions to the Moon and Mars. Their selection represents a powerful blend of talent and ambition, fueling humanity’s next great leaps into space. Tue, 23 Sep 2025 10:10:07 EDT https://www.sciencedaily.com/releases/2025/09/250923021204.htm https://www.sciencedaily.com/releases/2025/08/250828002359.htm Whale sharks in Indonesia are suffering widespread injuries, with a majority scarred by human activity. Researchers found bagans and boats to be the biggest threats, especially as shark tourism grows. Protecting these gentle giants may be as simple as redesigning fishing gear and boat equipment. Thu, 28 Aug 2025 04:01:37 EDT https://www.sciencedaily.com/releases/2025/08/250828002359.htm https://www.sciencedaily.com/releases/2025/05/250529124447.htm A new study shows that wildlife underpass tunnels dramatically reduce deaths of frog, salamanders, and other amphibians migrating across roads. Thu, 29 May 2025 12:44:47 EDT https://www.sciencedaily.com/releases/2025/05/250529124447.htm https://www.sciencedaily.com/releases/2025/05/250529124114.htm Reducing travel speeds and using an intelligent queuing system at busy ports can reduce greenhouse gas (GHG) emissions from oceangoing container vessels by 16-24%, according to researchers. Not only would those relatively simple interventions reduce emissions from a major, direct source of greenhouse gases, the technology to implement these measures already exists. Thu, 29 May 2025 12:41:14 EDT https://www.sciencedaily.com/releases/2025/05/250529124114.htm https://www.sciencedaily.com/releases/2025/05/250528131538.htm Involving communities in nature-based solutions to tackle urban climate and environmental challenges leads to innovation and multiple benefits, a study shows. Wed, 28 May 2025 13:15:38 EDT https://www.sciencedaily.com/releases/2025/05/250528131538.htm https://www.sciencedaily.com/releases/2025/05/250528131533.htm Researchers have released new insights on a pilot program involving all-electric buses in Ithaca, NY, USA -- with implications for cities, schools and other groups that are considering the electrification of their fleets, as well as operators, policymakers and manufacturers. Wed, 28 May 2025 13:15:33 EDT https://www.sciencedaily.com/releases/2025/05/250528131533.htm https://www.sciencedaily.com/releases/2025/05/250527124219.htm When it comes to public attitudes toward using self-driving cars, understanding how the vehicles work is important -- but so are less obvious characteristics like feelings of excitement or pleasure and a belief in technology's social benefits. Tue, 27 May 2025 12:42:19 EDT https://www.sciencedaily.com/releases/2025/05/250527124219.htm https://www.sciencedaily.com/releases/2025/05/250521125115.htm A study has found that implementing robust air pollution control measures could mean Southeast Asian countries prevent as many as 36,000 ozone-related premature deaths each year by 2050. Wed, 21 May 2025 12:51:15 EDT https://www.sciencedaily.com/releases/2025/05/250521125115.htm https://www.sciencedaily.com/releases/2025/05/250509122301.htm Researchers have developed a system, called ProxiCycle, that logs when a passing car comes too close to a cyclist (four feet or less). A small, inexpensive sensor plugs into bicycle handlebars and tracks the passes, sending them to the rider's phone. The team tested the system for two months with 15 cyclists in Seattle and found a significant correlation between the locations of close passes and other indicators of poor safety, such as collisions. Fri, 09 May 2025 12:23:01 EDT https://www.sciencedaily.com/releases/2025/05/250509122301.htm https://www.sciencedaily.com/releases/2025/05/250507130516.htm In a sweeping new study of more than 13,000 urban areas worldwide, researchers have mapped air pollution levels and carbon dioxide emissions, providing comprehensive global analysis of urban environmental quality. Wed, 07 May 2025 13:05:16 EDT https://www.sciencedaily.com/releases/2025/05/250507130516.htm https://www.sciencedaily.com/releases/2025/05/250506105342.htm Up to 250,000 deaths from poor air quality could be prevented annually in central and western Europe by 2050 if greenhouse gas emissions are drastically reduced, say researchers. Tue, 06 May 2025 10:53:42 EDT https://www.sciencedaily.com/releases/2025/05/250506105342.htm https://www.sciencedaily.com/releases/2025/05/250501163954.htm Urgent action must be taken to reduce the ever-rising number of people killed by extreme temperatures in India, say the authors of a new 19-year study which found that 20,000 people died from heatstroke in the last two decades. Cold exposure claimed another 15,000 lives. Thu, 01 May 2025 16:39:54 EDT https://www.sciencedaily.com/releases/2025/05/250501163954.htm https://www.sciencedaily.com/releases/2025/04/250430142729.htm Trees, parks, wetlands and green roofs can no longer be seen as a 'nice-to-have' aesthetic enhancement but a vital component for creating climate-resilient, healthier and more equitable cities, according to an international paper. Wed, 30 Apr 2025 14:27:29 EDT https://www.sciencedaily.com/releases/2025/04/250430142729.htm https://www.sciencedaily.com/releases/2025/04/250429195329.htm About 25% of 7350 patients hospitalized for scooter-related injuries between 2016 and 2021 were using substances such as alcohol, opioids, marijuana and cocaine when injured. The findings underscore the urgent need to strengthen safety regulations, enforce helmet use, and reduce substance use among scooter riders. Tue, 29 Apr 2025 19:53:29 EDT https://www.sciencedaily.com/releases/2025/04/250429195329.htm https://www.sciencedaily.com/releases/2025/04/250429103149.htm The global energy system may be faced with an inescapable trade-off between urgently addressing climate change versus avoiding an energy shortfall, according to a new energy scenario tool. Tue, 29 Apr 2025 10:31:49 EDT https://www.sciencedaily.com/releases/2025/04/250429103149.htm https://www.sciencedaily.com/releases/2025/04/250423111913.htm A new study lays out a scientific framework for holding individual fossil fuel companies liable for the costs of climate change by tracing specific damages back to their emissions. The researchers use the tool to provide the first causal estimate of economic losses due to extreme heat driven by emissions. They report that carbon dioxide and methane output from just 111 companies cost the world economy $28 trillion from 1991 to 2020, with the five top-emitting firms linked to $9 trillion of those losses. Wed, 23 Apr 2025 11:19:13 EDT https://www.sciencedaily.com/releases/2025/04/250423111913.htm https://www.sciencedaily.com/releases/2025/04/250421162612.htm Across the United States, 58% of counties have no active air-quality monitoring sites, according to a new study. Rural counties, especially those in the Midwest and South, are less likely to have air-quality monitoring sites, which could impede pollution estimations and impact public health, the team said. Mon, 21 Apr 2025 16:26:12 EDT https://www.sciencedaily.com/releases/2025/04/250421162612.htm https://www.sciencedaily.com/releases/2025/04/250416152116.htm Researchers developed a machine-learning-guided technique to solve complex, long-horizon planning problems more efficiently than some traditional approaches, while arriving at an optimal solution that better meets a user's goals. Wed, 16 Apr 2025 15:21:16 EDT https://www.sciencedaily.com/releases/2025/04/250416152116.htm https://www.sciencedaily.com/releases/2025/04/250416135244.htm Switching from diesel to electric trains dramatically improved the air quality aboard the San Francisco Bay Area's Caltrain commuter rail line, reducing riders' exposure to the carcinogen black carbon by an average of 89%, finds a new study. The electrification of the system also significantly reduced the ambient black carbon concentrations within and around the San Francisco station. Wed, 16 Apr 2025 13:52:44 EDT https://www.sciencedaily.com/releases/2025/04/250416135244.htm https://www.sciencedaily.com/releases/2025/04/250411110035.htm Police officers are more than twice as likely to have traumatic brain injuries compared to the general population. Fri, 11 Apr 2025 11:00:35 EDT https://www.sciencedaily.com/releases/2025/04/250411110035.htm https://www.sciencedaily.com/releases/2025/04/250410131008.htm The transition to electric vehicles won't reduce carbon emissions unless countries clean up their electricity grids. Thu, 10 Apr 2025 13:10:08 EDT https://www.sciencedaily.com/releases/2025/04/250410131008.htm https://www.sciencedaily.com/releases/2025/04/250409115055.htm Researchers analyzed trade-related risks to energy security across 1,092 scenarios for cutting carbon emissions by 2060. They found that swapping out dependence on imported fossil fuels for increased dependence on critical minerals for clean energy would improve security for most nations -- including the U.S., if it cultivates new trade partners. Wed, 09 Apr 2025 11:50:55 EDT https://www.sciencedaily.com/releases/2025/04/250409115055.htm https://www.sciencedaily.com/releases/2025/04/250402181306.htm New York City's automated speed cameras reduced traffic crashes by 14% and decreased speeding violations by 75% over time, according to new research. The research revealed most cameras achieve their safety purpose within six months, with violations dropping and staying low -- showing drivers have changed behavior to drive more slowly and the cameras are working as intended, to deter speeding. Wed, 02 Apr 2025 18:13:06 EDT https://www.sciencedaily.com/releases/2025/04/250402181306.htm https://www.sciencedaily.com/releases/2025/03/250326122930.htm Los Angeles has some of the strictest tree planting rules in the nation. These policies limit tree growth, worsen shade disparities and don't improve safety, researchers found. When researchers modeled looser planting restrictions in a lower-income neighborhood, potential tree space increased by nearly 26%. But narrow sidewalks and dense infrastructure still limited where larger, shade trees could thrive. Many of L.A.'s strict tree-spacing rules are internal guidelines -- not laws -- meaning they could be updated more easily to allow for more trees. Closing L.A.'s shade gap, however, will require more than policy tweaks; infrastructure investments are also needed. Wed, 26 Mar 2025 12:29:30 EDT https://www.sciencedaily.com/releases/2025/03/250326122930.htm https://www.sciencedaily.com/releases/2025/03/250325160102.htm A study finds NBA teams that hired more analytics staff, and invested more in data analysis, tended to win more games. Tue, 25 Mar 2025 16:01:02 EDT https://www.sciencedaily.com/releases/2025/03/250325160102.htm https://www.sciencedaily.com/releases/2025/03/250325115839.htm Crashes on electric scooters are mostly due to the behavior of the riders, with one-handed steering and riding in a group being some of the largest risk factors. The researchers are also concerned about riders who deliberately crash or cause dangerous situations when riding, a phenomenon that seems to be specific to electric scooters. Tue, 25 Mar 2025 11:58:39 EDT https://www.sciencedaily.com/releases/2025/03/250325115839.htm https://www.sciencedaily.com/releases/2025/03/250325115836.htm By using geometric shapes in the shock-absorbing material, researchers have developed a bicycle helmet that provides better protection against head injuries. The material absorbs shock by contracting bilaterally. Tue, 25 Mar 2025 11:58:36 EDT https://www.sciencedaily.com/releases/2025/03/250325115836.htm https://www.sciencedaily.com/releases/2025/03/250323235833.htm Existing tax policies during the energy transition from fossil fuels to renewable sources will lead to major energy injustices and skewed priorities, new research shows. Sun, 23 Mar 2025 23:58:33 EDT https://www.sciencedaily.com/releases/2025/03/250323235833.htm https://www.sciencedaily.com/releases/2025/03/250320144819.htm Americans have long believed that sports are one area in society that offers kids from all backgrounds the chance to succeed to the best of their abilities. But new research suggests that this belief is largely a myth, and that success in high school and college athletics often is influenced by race and gender, as well as socioeconomic status, including family wealth and education. Thu, 20 Mar 2025 14:48:19 EDT https://www.sciencedaily.com/releases/2025/03/250320144819.htm https://www.sciencedaily.com/releases/2025/03/250318175014.htm The EPA's network consistently failed to capture air quality in communities of color across six major pollutants. The monitors are the key data source driving decisions about pollution reduction, urban planning and public health initiatives. The data may misrepresent pollution concentrations, leaving marginalized groups at risk. Tue, 18 Mar 2025 17:50:14 EDT https://www.sciencedaily.com/releases/2025/03/250318175014.htm https://www.sciencedaily.com/releases/2025/03/250318140744.htm Researchers used community input to design Advanced Clean Truck (ACT) air-quality model experiments. Community asked for ACT policy simulations that convert 48% of medium- and heavy-duty vehicles into zero tailpipe emission versions. Researchers simulated how this policy would change pollution levels in Illinois. They found the policy would likely prevent 500 premature deaths and 600 new pediatric asthma cases annually within the greater Chicago area. Tue, 18 Mar 2025 14:07:44 EDT https://www.sciencedaily.com/releases/2025/03/250318140744.htm https://www.sciencedaily.com/releases/2025/03/250312124618.htm New Delhi's air pollution is more severe than previously estimated with particles absorbing atmospheric water vapor leading to particulate matter levels across the city being underestimated by up to 20%. Wed, 12 Mar 2025 12:46:18 EDT https://www.sciencedaily.com/releases/2025/03/250312124618.htm https://www.sciencedaily.com/releases/2025/03/250312124143.htm Researchers gathered emissions data from hundreds of US cities that either conducted a greenhouse gas emissions inventory, or reported they employed sustainability staff. The cities that conducted an inventory showed a statistically significant reduction in emissions between 2010 and 2015, while those with sustainability staff did not. Little research had previously been done to gauge effects of such measures and show that addressing emissions is meaningful, researchers argue. Wed, 12 Mar 2025 12:41:43 EDT https://www.sciencedaily.com/releases/2025/03/250312124143.htm https://www.sciencedaily.com/releases/2025/03/250306122916.htm Urban highways promise to get people to their destinations faster -- and bring them together. But at the same time, they reduce social connections between people within the city, especially at distances of less than 5 km, according to a new study. Thu, 06 Mar 2025 12:29:16 EST https://www.sciencedaily.com/releases/2025/03/250306122916.htm https://www.sciencedaily.com/releases/2025/03/250304113814.htm Nearly 40% of adult Americans say they've experienced some type of sport-related mistreatment in their lives, a new study shows. Mistreatment ranged from psychological and emotional to physical and sexual. But most people who reported mistreatment experienced more than one kind, the research found. Tue, 04 Mar 2025 11:38:14 EST https://www.sciencedaily.com/releases/2025/03/250304113814.htm https://www.sciencedaily.com/releases/2025/03/250303141106.htm London's Ultra Low Emission Zone (ULEZ) is transforming children's journeys to school by making streets safer, improving perceptions of air quality and encouraging children to live healthier lives. A new study highlights its benefits, with many families noticing cleaner air and safer roads. However, it also reveals challenges, particularly for those living in outer boroughs who are more reliant on the car and may struggle to adapt. Mon, 03 Mar 2025 14:11:06 EST https://www.sciencedaily.com/releases/2025/03/250303141106.htm https://www.sciencedaily.com/releases/2025/02/250227125926.htm A framework helps rail system operators or other planners identify the best joint infrastructure projects to collaborate on with other firms. Their tool can tell an operator how much to invest, the proper time to collaborate, and how the shared profits should be distributed. Thu, 27 Feb 2025 12:59:26 EST https://www.sciencedaily.com/releases/2025/02/250227125926.htm https://www.sciencedaily.com/releases/2025/02/250226213207.htm Salt Lake City and Los Angeles, the major population hubs of their respective states, are much different places, but they both experience poor air quality and share valley topography that traps pollutants during weather inversions. Utah and Southern California differ sharply in their approaches to this problem, with the latter implementing more stringent regulations and fuel standards aimed at reducing emissions from motor vehicles. New research shows California's earlier adoption of stricter rules may have helped lower concentrations of one pollutant -- carbon monoxide, or CO -- on LA freeways. Wed, 26 Feb 2025 21:32:07 EST https://www.sciencedaily.com/releases/2025/02/250226213207.htm https://www.sciencedaily.com/releases/2025/02/250221125245.htm Scientists outline the urgency to better identify the significant damage sand extraction across the world heaps upon marine biodiversity. Fri, 21 Feb 2025 12:52:45 EST https://www.sciencedaily.com/releases/2025/02/250221125245.htm https://www.sciencedaily.com/releases/2025/02/250213144317.htm Researchers have developed a reactor that pulls carbon dioxide directly from the air and converts it into sustainable fuel, using sunlight as the power source. Thu, 13 Feb 2025 14:43:17 EST https://www.sciencedaily.com/releases/2025/02/250213144317.htm https://www.sciencedaily.com/releases/2025/02/250213143557.htm Researchers have quantified the role of the 'hydrogen economy' in making our society more sustainable. They present the results of extensive modelling of pathways to decarbonizing the European economy by 2050. They conclude that when it comes to providing a sustainable primary source of energy, electrification will prove to be the most cost-efficient route for most economic sectors with an average total share of around 60% in final energy consumption. In contrast, the projected share of direct hydrogen use will be 10% at the highest. Thu, 13 Feb 2025 14:35:57 EST https://www.sciencedaily.com/releases/2025/02/250213143557.htm https://www.sciencedaily.com/releases/2025/02/250210153743.htm New research finds that electric vehicles generally produce less non-exhaust emissions compared with gasoline-powered vehicles. Mon, 10 Feb 2025 15:37:43 EST https://www.sciencedaily.com/releases/2025/02/250210153743.htm https://www.sciencedaily.com/releases/2025/02/250205131908.htm There's a 26 per cent annual chance that space rocket junk will re-enter the atmosphere and pass through a busy flight area, according to a recent study. While the chance of debris hitting an aircraft is very low, the research highlights that the potential for uncontrolled space rocket junk to disrupt flights and create additional costs for airlines and passengers is not. Wed, 05 Feb 2025 13:19:08 EST https://www.sciencedaily.com/releases/2025/02/250205131908.htm https://www.sciencedaily.com/releases/2025/02/250204173806.htm New research shows grain yields critical to India's food security are dragged down 10% or more in many parts of the country by nitrogen dioxide pollution from power stations that run on coal. Economic losses from crop damages exceed $800 million per year. Tue, 04 Feb 2025 17:38:06 EST https://www.sciencedaily.com/releases/2025/02/250204173806.htm https://www.sciencedaily.com/releases/2025/01/250127161927.htm develop a model that can help municipalities choose optimal locations as they expand their cycling lane networks in response to growing demand. Mon, 27 Jan 2025 16:19:27 EST https://www.sciencedaily.com/releases/2025/01/250127161927.htm https://www.sciencedaily.com/releases/2025/01/250127124152.htm A new study has found that drug screening practices may be inconsistent with potential downstream effects in reporting to the RMV. Mon, 27 Jan 2025 12:41:52 EST https://www.sciencedaily.com/releases/2025/01/250127124152.htm https://www.sciencedaily.com/releases/2025/01/250117171311.htm Atmospheric scientists show proposed 'geoengineering' effort to remove methane, a potent greenhouse gas, from the atmosphere could worse air quality while providing minimal climate benefits. Fri, 17 Jan 2025 17:13:11 EST https://www.sciencedaily.com/releases/2025/01/250117171311.htm https://www.sciencedaily.com/releases/2025/01/250109130035.htm Researchers have developed new measurement techniques and methods to measure emissions from category-L vehicles in realistic operation and to determine corresponding limit values. Thu, 09 Jan 2025 13:00:35 EST https://www.sciencedaily.com/releases/2025/01/250109130035.htm https://www.sciencedaily.com/releases/2025/01/250106132901.htm A new study used acoustic sensors that detect the sound of gunfire to show how often children in one Chicago neighborhood are exposed to gunshots while walking to and from school. Results showed that nearly two-thirds of schools in the Englewood neighborhood of Chicago had at least one gun incident within 400 meters (about one-quarter mile) of where children were walking home during the 2021-22 school year. Mon, 06 Jan 2025 13:29:01 EST https://www.sciencedaily.com/releases/2025/01/250106132901.htm https://www.sciencedaily.com/releases/2024/12/241220132902.htm Using field sensors, various ecological modelling technologies and deep learning algorithms, a French research team has developed a method for mapping the risk of collisions between animals and vehicles along transport infrastructures. In the future, it could contribute to collision management in autonomous vehicles thanks to connected infrastructures. Fri, 20 Dec 2024 13:29:02 EST https://www.sciencedaily.com/releases/2024/12/241220132902.htm https://www.sciencedaily.com/releases/2024/12/241220132657.htm We know a lot about how much fossil-derived carbon is emitted to the atmosphere but less about how much is stored in human-made products. Ecological economists estimate that each year, humans add around 400 million tons of fossil carbon to long-lasting products such as plastics, buildings, and human infrastructure. Although these products could be considered a 'carbon sink,' proper waste management is essential to prevent them from becoming environmental hazards. Fri, 20 Dec 2024 13:26:57 EST https://www.sciencedaily.com/releases/2024/12/241220132657.htm https://www.sciencedaily.com/releases/2024/12/241219152500.htm More American cities -- even those seen as affluent -- are home to people living without running water as people are being 'squeezed' by unaffordable housing and the cost-of-living crisis, new research finds. Thu, 19 Dec 2024 15:25:00 EST https://www.sciencedaily.com/releases/2024/12/241219152500.htm https://www.sciencedaily.com/releases/2024/12/241210115914.htm Normally, America's smokiest cities lie out west. But Canada's unusually intense 2023 wildfire season smothered American cities in smoke farther east than is usual, according to new research. Tue, 10 Dec 2024 11:59:14 EST https://www.sciencedaily.com/releases/2024/12/241210115914.htm