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<jats:p> Li <jats:italic>et al</jats:italic> . commented that our report claims that methods reported thus far cannot enable the production of high-purity corundum with surface areas greater than 100 m <jats:sup>2</jats:sup> g <jats:sup>–1</jats:sup> , and that our obtained material could be porous aggregates rather than nanoparticles. We disagree with both of these suggestions. </jats:p>

<jats:p>When two French doctors recently discussed the ease of conducting clinical research on coronavirus disease 2019 (COVID-19) in African nations, with an insinuation that ethical and safety standards for testing vaccines and treatments in these nations are lower than in other countries, anti-African research sentiments flared on social media and in news reports. Suggesting that clinical trial conduct is at a lower standard in Africa is unacceptable. Africa has innovated and implemented health solutions with high ethical regard for its people. In March, the Academy of Science of South Africa stressed the importance of research and development on COVID-19 in Africa as “key to the response to outbreaks of emerging and re-emerging pathogens.” The expertise and infrastructure of African clinical research sites, along with African nations' engagement of their communities who wish to contribute to effective solutions, are ready to be leveraged to tackle this pandemic emergency.</jats:p>

<jats:p>A roundup of weekly science policy and related news.</jats:p>

<jats:p>Randomized trials are underway after small studies suggest transfusions can save lives.</jats:p>

<jats:p>Studies are launching to pinpoint children most at risk.</jats:p>

<jats:p>Researchers harness AI and old-fashioned expertise to glean findings, but face challenges.</jats:p>

<jats:p>Malformed spores suggest powerful storms drove ozone loss as climate warmed.</jats:p>

<jats:p>When tuned up, old algorithms can match the abilities of their successors.</jats:p>

<jats:p>Years of animal welfare violations documented by USDA.</jats:p>

<jats:p>Bispecific antibodies unleash T cells against cancer by physically tethering them to tumor cells.</jats:p>