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<jats:title>Following the yellow brick road</jats:title> <jats:p> The adrenal glands affect a variety of processes such as stress responses and metabolism. The mature adrenal gland is formed from multiple tissue sources, including cells of neural origin. Furlan <jats:italic>et al.</jats:italic> traced the origins of these cells. The cells first become Schwann cell precursors and follow along nerves to travel from the dorsal root ganglia of the spine to the adrenal gland. Once there, the cells differentiate into chromaffin cells. The authors used singlecell transcriptomics to reveal the shifts in functional programs during migration, development, and differentiation. </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" issue="6346" page="eaal3753" related-article-type="in-this-issue" vol="357" xlink:href="10.1126/science.aal3753">eaal3753</jats:related-article> </jats:p>

<jats:p>In an essay about his science fiction, Isaac Asimov reflected that “it became very common…to picture robots as dangerous devices that invariably destroyed their creators.” He rejected this view and formulated the “laws of robotics,” aimed at ensuring the safety and benevolence of robotic systems. Asimov's stories about the relationship between people and robots were only a few years old when the phrase “artificial intelligence” (AI) was used for the first time in a 1955 proposal for a study on using computers to “…solve kinds of problems now reserved for humans.” Over the half-century since that study, AI has matured into subdisciplines that have yielded a constellation of methods that enable perception, learning, reasoning, and natural language understanding.</jats:p>

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

<jats:p>Earlier sequences are riddled with gaps, overlapping repeats, misplaced segments</jats:p>

<jats:p>But House panel reduces climate and earth science</jats:p>

<jats:p>Air fleet to study effects of melting permafrost on ecosystems and the climate</jats:p>

<jats:p>Ancient encounter may have completely replaced Neandertals' mitochondrial DNA</jats:p>

<jats:p>New president pushes dramatic shift in energy policy</jats:p>

<jats:p>Artificial intelligence helps scientists cope with torrents of data</jats:p>