Space waves reveal where Earth’s magnetic shield is under pressure
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Updates every hour. Last Updated: 22-Oct-2026 01:16 ET (22-Oct-2026 05:16 GMT/UTC)
A mini-review published in the Journal of Bioresources and Bioproducts explores teak-derived quinones as potential redox-active additives for alkaline pulping. Anthraquinone has long been used to promote lignin removal while helping preserve carbohydrates, but safety concerns have encouraged the search for alternatives. By examining studies published between 1972 and 2026, the review compares synthetic anthraquinone derivatives, teak wood extracts and individual compounds such as 2-methylanthraquinone, deoxylapachol and lapachol. The findings suggest that some teak-derived materials can improve delignification, retain carbohydrates or reduce alkali requirements under specific cooking conditions. Nevertheless, differences in extract composition, limited toxicological evidence and the lack of comprehensive process-level assessments remain important barriers to wider application.
Maternal disorders remain critical indicators of national development and public health. In this study, researchers analyzed the burden of maternal disorders in China from 1990 to 2023 using data from the Global Burden of Diseases, Injuries, and Risk Factors Study 2023. The findings reveal a substantial decline in prevalence, mortality, and disability-adjusted life years over the past three decades, alongside notable shifts in leading causes and emerging challenges associated with China's changing fertility policies.
Wood coloring is an important approach to expanding the decorative possibilities of wood products, but achieving a colored appearance without concealing the natural grain and texture remains a materials challenge. Transparent coloring seeks to reconcile these objectives by combining color modification with the visual preservation of the wood substrate. This review, published in the Journal of Bioresources and Bioproducts, focuses on transparent coloring of wood, a topic relevant to the design of wood products for interior decoration, furniture and other applications in which natural appearance is an important consideration. The subject also raises broader questions about color uniformity, compatibility with the wood structure, color stability and the durability of treated materials. Understanding the available approaches and their limitations is important for advancing wood-coloring technologies and identifying opportunities for further research.
A new study, led by IIASA researchers and coauthored by UNEP colleagues, finds that if governments fully implement their methane reduction plans, they could reduce global emissions by 11% between 2020 and 2030. This would reverse the current trend of increasing methane emissions, but would not be sufficient to achieve the goal of the Global Methane Pledge. A detailed assessment shows that a 22% reduction could be possible at a relatively low cost, while a 30% reduction would nearly exhaust the mitigation potential achievable with existing technology.