The situation should not get out of control. Eric Drexler’s “gray goo” threat created a red alert among scientists. Although Drexler has explained that his gray goo scenario is the wrong issue to focus …

Nov 1, 2024 · LID practices scenario most effectively reduced peak flooding rates. Urban pluvial floods pose a significant risk to cities, occurring when precipitation exceeds the carrying capacity of the …

Apr 4, 2025 · This study presents a comparative LCA of grey, blue, green and pale-blue hydrogen production methods, evaluating their cumulative energy demand (CED), carbon footprint (CF), and …

Jan 15, 2023 · The remaining energy curtailment is the same as that of the corresponding case with green hydrogen production (i.e. for the same scenario and the same nominal electrolysis power) and …

Jan 1, 2018 · Last but not least is the set of potential exotic catastrophic events, which includes: out-of-control nanotechnologies (i.e., the grey goo scenario) (Joy, 2000), the emergence of threatening …

Oct 1, 2005 · It has suffered from much ill-informed scaremongering, such as the “grey goo” scenario which has led to interest from the popular press and politicians. On the other hand, the term is so ill …

Apr 20, 2021 · The simulation results reveal that compared with the BAU scenario, both the single trading market scenario and the double trading market scenario can accelerate the mitigation of CO2 …

Mar 1, 2026 · There is a lack of comprehensive analysis that integrates: The trade-offs between hydrogen "colors" (grey, blue, brown, green) using specific environmental efficiency metrics that …

Sep 1, 2015 · Last but not least is the set of potential exotic catastrophic events, which includes: out-of-control nanotechnologies (i.e., the grey goo scenario) (Joy, 2000), the emergence of threatening …

Jan 15, 2021 · Whole-cell amino acid biosensors can sense the concentrations of certain amino acids and output easily detectable signals, which are important for con…