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Global study shows uneven urbanization among large cities in the last two decades

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According to the latest report from the United Nations (UN), the global population in 2018 was 7.6 By 2050, the global population is expected to soar to 9.7 Credit: The University of Hong Kong. The world has experienced significant urbanization in recent decades. billion and the urban population was 4.2

Global 433
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Stanford researchers make ammonia from air and water microdroplets

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Stanford researchers, with a colleague from King Fahd University of Petroleum and Minerals, have developed a simple and environmentally sound way to make ammonia with tiny droplets of water and nitrogen from the air. An open-access paper on their work is published in Proceedings of the National Academy of Sciences (PNAS). —Song et al.

Water 459
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BNL Researchers develop low-cost, efficient, non-noble metal electrocatalyst to produce hydrogen from water

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A team of researchers led by Dr. James Muckerman at the US Department of Energy’s (DOE) Brookhaven National Laboratory (BNL) have developed a new class of high-activity, low-cost, non-noble metal electrocatalyst that generates hydrogen gas from water. Click to enlarge. —Wei-Fu Chen.

Low Cost 281
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ARPA-E awarding $33M to 10 projects for natural gas pipeline retrofitting: REPAIR

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REPAIR teams will develop technology that enables gas utilities to update their distribution systems at low cost and continue to reliably service commercial and residential gas delivery needs nationwide. University of Colorado, Boulder. General Electric Global Research. University of Maryland.

Gas 297
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Zhejiang University team investigates emissions from methanol-gasoline blends

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Globally, the use of methanol as an alternative fuel has attracted interest because of its low production cost, renewable capacity, and good combustion-related properties (higher thermal efficiency, higher engine power, and lower regulated emissions). —Yao et al.

Gasoline 150
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DOE awarding $1.6B to 11 battery materials separation and processing projects as part of $2.8B funding

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American Battery Technology Company , Large-Scale Demonstration of Domestic Manufacturing of Low-Cost and Low- Environmental Impact Battery-Grade Lithium Hydroxide from Unconventional Domestic Sedimentary Resources, $57,744,831. Ascend Elements , Apex – Integrated Sustainable Battery Precursor, $316,186,575.

Parts 459
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Study: no one knows which city has the highest concentration of PM2.5

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is the leading global environmental risk factor for mortality and disease burden, with associated annual global welfare costs of trillions of dollars, However, no one knows what city has the highest level of the pollution. at the global scale. The global mean population distance to nearest PM 2.5 monitoring at all.

St. Louis 220