Catálogo de publicaciones - revistas

<jats:p> Wang <jats:italic>et al</jats:italic> . (Research Articles, 11 December 2020, p. 1295) reported a large decrease in CO <jats:sub>2</jats:sub> fertilization effect (CFE) across the globe during the period 1982–2015 and suggested that ecosystem models underestimate the rate of CFE decline. We find that their claims are artifacts of incorrect processing of satellite data and problematic methods for deriving and comparing CFE between satellite data and model simulations. </jats:p>

<jats:title>Stockpiling and control</jats:title> <jats:p> A triumph that has emerged from the catastrophe of the severe acute respiratory syndrome coronavirus 2 pandemic has been the rapid development of several potent vaccines. However, 18 months into the pandemic and more than 6 months after vaccine approval, wealthy countries remain the major beneficiaries. Wagner <jats:italic>et al</jats:italic> . model the consequences of vaccine stockpiling in affluent countries on disease rates in lower- and middle-income countries and the consequences for the eruption of new variants that could jeopardize the early success of vaccines. For countries that can readily access vaccines, it would be better to share vaccines equitably to lower disease burdens in countries with less access, reduce the cost of having to be constantly vigilant for case imports, and minimize virus evolution. —CA </jats:p>

<jats:p> Our study suggests that the global CO <jats:sub>2</jats:sub> fertilization effect (CFE) on vegetation photosynthesis has declined during the past four decades. The Comments suggest that the temporal inconsistency in AVHRR data and the attribution method undermine the results’ robustness. Here, we provide additional evidence that these arguments did not affect our finding and that the global decline in CFE is robust. </jats:p>

<jats:p> Wang <jats:italic>et al</jats:italic> . (Research Articles, 11 December 2020, p. 1295), using photosynthesis proxies from long-term satellite records, report a significant decline in CO <jats:sub>2</jats:sub> fertilization effects. We find that small systematic biases in Advanced Very High Resolution Radiometer (AVHRR) data affect their analysis to the degree that the key finding is not robust. Caution is recommended when using AVHRR to detect changes in near-infrared reflectance of vegetation (NIRv) trends and vegetation indices. </jats:p>

<jats:p> Wang <jats:italic>et al</jats:italic> . (Research Articles, 11 December 2020, p. 1295) reported a large decline in the CO <jats:sub>2</jats:sub> fertilization effect (CFE) on global photosynthesis, on the basis of changing regression coefficients of CO <jats:sub>2</jats:sub> (β) for satellite proxies/products of photosynthesis. We show that their methods cannot robustly estimate CFE, leading to incorrect attribution, and largely neglect CO <jats:sub>2</jats:sub> effects on the photosynthetic enzyme ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO). </jats:p>

<jats:p>The US Infrastructure Investment and Jobs Act (IIJA), which is winding its way through Congress, makes progress toward President Biden’s campaign promise to “build back better” by investing $0.55 trillion to repair the nation’s transportation, water, and energy systems. But this allocation is only a fraction of the American Society of Civil Engineers estimated $2.5 trillion infrastructure investment deficit. To bridge this value gap, the nation must build back “wiser” by investing IIJA dollars in digitized, versatile, distributed, and inclusive infrastructure systems.</jats:p>

<jats:p> A century ago this week, 300 scientists, policy-makers, and campaigners gathered at the American Museum of Natural History in New York to discuss their work about heredity and eugenics—the political ideology designed to sculpt societies through biological methods of population control <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://www.science.org/content/blog-post/eugenics-and-history-science-and-aaas"> (the meeting was highlighted in <jats:italic>Science</jats:italic> a week later) </jats:ext-link> . The aims of eugenics were to nurture the propagation of people deemed “desirable” and to reduce the number of “undesirable” or “defective” people, primarily through enforced sterilization. Although recognized as toxic now, back then, eugenics enjoyed popular and bipartisan support and would grow to be one of the defining ideas of the 20th century. </jats:p>

<jats:p>Department of Energy says it has no plan to downsize $3 billion neutrino experiment</jats:p>

<jats:p>Pedro Castillo, a former teacher, has promised to support research and bolster the country’s fight against COVID-19</jats:p>