Catálogo de publicaciones - revistas

<jats:title>East African genetics and pastoralism</jats:title> <jats:p> The origin and spread of domestic animals across the globe also affected the underlying genetic composition of human populations. In Africa, however, it has been difficult to identify the impact of interactions among migrating food producers and local hunter-gatherers. Prendergast <jats:italic>et al.</jats:italic> wanted to discern the timing and movement of husbandry and pastoralism and its effects on foraging communities in Africa. They sequenced 41 ancient eastern African human genomes from individuals that lived approximately 100 to 4000 years ago. Surprisingly, relatively little genetic mixture occurred at the same time as the spread of pastoralism. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.aaw6275">eaaw6275</jats:related-article> </jats:p>

<jats:title>Temporal code underlies circuit formation</jats:title> <jats:p> Olfactory neurons respond to various odorants according to which olfactory receptors, of many, they express. During development, axons from olfactory neurons that express the same olfactory receptor converge to share the same glomeruli. Nakashima <jats:italic>et al.</jats:italic> now show that, in mice, the neurons build these connections according to shared patterns of activity. When the olfactory receptor is triggered, it causes its cell not simply to fire but to fire in specific patterns. Neurons that speak the same code end up connected at the same glomerulus. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.aaw5030">eaaw5030</jats:related-article> </jats:p>

<jats:p>Many scientific and economic successes in the United States are owed to the work of foreign-born scientists. Today, a substantial percentage of U.S patents and scientific publications are contributed by Chinese-born scientists. But there is increasing concern that China is unfairly and systematically attempting to capture intellectual property, trade secrets, and advanced technologies from the United States, all detrimental to productive long-term relationships. As part of the U.S. response to these threats, tenured Chinese-American scientists at top institutions of biomedical research were recently dismissed for purported violations of disclosure rules, breaches of confidentiality, or outright suspicion of espionage. As Congress seeks to protect the open and collaborative approach to science and technology from nefarious activities of foreign states, the scientific community must weigh in on the path forward.</jats:p>

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

<jats:p>Agency is sending many fewer warning letters</jats:p>

<jats:p>Official overseeing inquiry reveals undisclosed firings and returned funds from universities</jats:p>

<jats:p>Dragonfly quadcopter will scout saturnian moon for life</jats:p>

<jats:p>Dragonfly quadcopter will scout saturnian moon for life</jats:p>

<jats:p>U.S. patent office issues new interference declaration</jats:p>

<jats:p>U.S. patent office issues new interference declaration</jats:p>