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Adaptations to water stress and pastoralism in the Turkana of northwest Kenya

1 year 1 month ago
Science, Volume 389, Issue 6766, Page 1246-1251, September 2025.
A. J. Lea, I. V. Caldas, K. M. Garske, E. R. Gerlinger, J. P. Arroyo, J. Echwa, M. Gurven, C. Handley, J. C. Kahumbu, J. Kamau, P. Kinyua, F. Lotukoi, A. Lopurudoi, S. Lowasa, S. N. Njeru, R. Mallarino, D. J. Martins, P. W. Messer, C. Miano, B. Muhoya, J…

Fall Books 2025

1 year 1 month ago
Science, Volume 389, Issue 6766, Page 1180-1186, September 2025.
Margaret Linak, Adam Shapiro, Meryleen Mena, Carolyn Wong Simpkins, Amit Chandra, Lisa Poggiali, Bradley G. Lusk, Josh Trapani and Rosemarie Szostak

The how and why of sleep: Motor theory and catecholamine hypothesis

1 year 1 month ago
Sleep entails profound changes in the brain and body, marked by altered states of consciousness and reduced somatic and autonomic motor activity. Regarding "how" sleep is regulated, whole-brain screening revealed large sleep-control networks spanning the forebrain, midbrain, and hindbrain. We unify diverse experimental evidence under a "motor theory," in which the sleep-control mechanism is integral to somatic and autonomic motor circuits. Regarding the "why" question, sleep deprivation impairs...
Chenyan Ma