One set of neurons helps the heart (pictured, a mouse’s heart) keep beating steadily, and another set buffers the heartbeat against acute stress.Credit: Steve Gschmeissner/SPL Each heartbeat is choreographed not only by the brain but also by a mysterious nervous system embedded in the heart itself. Now, scientists studying mice have begun to unravel how
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Schneider, J., Dedieu, C., Le Sidaner, P., Savalle, R. and Zolotukhin, I. The encyclopedia of extrasolar planets: a database for exoplanets and their host stars. Astron. Astrophy. 532A79 (2011). Google Scholar article Lazzoni, C. et al. The search for disks or planetary objects around directly imaged companions: a candidate around DH Tauri B. Astron. Astrophy.
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Air conditioners generate heat and are expensive to operate.Credit: Ezra Acayan/Getty As large swaths of Europe and Asia suffer record heat waves this summer, discussions have focused on an obvious way to keep people cool: more air conditioners. Popular in high-income countries such as the United States, Japan and Australia, these units are less common
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