Core Insights - Scientists from China and the United States have developed a one-step method to safely convert toxic mixed plastic waste into gasoline, achieving over 95% conversion efficiency at room temperature [1][2] - This new process requires less energy, fewer steps, and less equipment compared to traditional plastic-to-fuel conversion methods, making it scalable for industrial applications [1] - The final products of the conversion process include gasoline components, chemical raw materials, and hydrochloric acid, which can be utilized in various industries such as water treatment, metal processing, pharmaceuticals, food production, and the oil industry [1] Group 1 - The global cumulative plastic production has reached 100 billion tons, with a significant portion destined to become difficult-to-recycle waste [2] - PVC, which constitutes about 10% of global plastic production, requires dechlorination before traditional energy recovery methods to prevent the release of toxic compounds [2] - The new strategy proposed by researchers aims to upgrade waste PVC into chlorine-free fuel-grade hydrocarbons and hydrochloric acid through a single-stage process [2] Group 2 - The team tested the conversion efficiency of PVC mixtures and polyolefin waste, achieving a solid conversion efficiency of up to 96% at 80 degrees Celsius [3] - The process is suitable for handling mixed and contaminated PVC and polyolefin waste commonly found in real-world scenarios [3]

Core Insights - Meituan's Qingshan Plan has made significant progress in promoting sustainable practices, with over 2.6 million merchants having "Merchant Qingshan Profiles" and more than 520 million users utilizing the "No Utensils" feature, resulting in over 10 billion related orders by July 2025 [1][2] - The plan has implemented large-scale waste classification and takeout box recycling projects in 24 cities across 20 provinces, recovering over 37,000 tons of plastic takeout boxes [1][2] - The initiative emphasizes a balanced approach of "reduction, substitution, and recycling" to tackle plastic pollution while ensuring food safety and consumer demand [1] Group 1 - The "Box Fusion" initiative aims to address the challenges of takeout box recycling by leveraging big data for site optimization and supporting infrastructure development for collection and recycling [2] - The establishment of a socialized recycling and high-value utilization system for takeout boxes is underway, with ongoing efforts to enhance the recycling chain through technological innovation [2][3] - Meituan's collaboration with industry partners and brands has led to the "Good Cup New Life" campaign, which encourages consumer participation in recycling through rewards and experiences [3] Group 2 - The Qingshan Plan has set a "2030 Goal" to drive low-carbon transformation across Meituan's businesses, aiming for 4 million merchants to provide green offerings and 700 million users to engage in low-carbon consumption [4] - A "Green Packaging and Recycling Fund" will be established to enhance packaging design and recycling levels, targeting a 50% usage rate of green packaging among merchants and a 40% comprehensive recycling rate for plastic takeout boxes and beverage cups [4] - The plan will continue to engage with public welfare merchants to promote biodiversity protection and zero waste initiatives, contributing to harmonious coexistence between humans and nature [4]

Core Insights - The research team from Dalian University of Technology has achieved a breakthrough in the uniform distribution of carbonyls in polyketone chains, enabling "customized" material properties and efficient compatibility between polyethylene and nylon, paving new paths for mixed plastic recycling [1][2] - Over 300 million tons of plastic waste are generated globally each year, with polyethylene and nylon being difficult to recycle together due to their differing chemical properties, often ending up in landfills or oceans [1] Group 1 - The study reveals the phase evolution mechanism between non-polar polyethylene and polar alternating polyketone, breaking the limitations of traditional alternating copolymerization [2] - The non-alternating structure is shown to be a new dimension for performance regulation, akin to building a molecular zipper bridge between polyethylene and nylon, allowing them to "shake hands" at the interface [2] - The non-alternating copolymerization reaction is a homogeneous polymerization process, avoiding issues related to slurry polymerization reactors, and making metal catalysts easier to recover and industrially scalable [2] Group 2 - The research received support from the National Natural Science Foundation's integrated project, Dalian Municipal Science and Technology Innovation Fund for applied basic research, and the Ministry of Education's Frontier Science Center for Intelligent Materials and Chemical Engineering [2]