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PNAS in the News
Top Stories for May 18
Hadza participants in resting postures. Image credit: David A. Raichlen.
Evolution of sedentary behaviors
Analysis of sedentary behaviors of Hadza hunter-gatherers in Tanzania suggests humans require daily muscle activity from movement and resting postures.
Research article published in PNAS
“Sitting, squatting, and the evolutionary biology of human inactivity,” by David A. Raichlen, et al.
Article
Illustration of human brain. Image credit: Pixabay/sbtlneet.
Brain aging and diet
Analysis of resting-state fMRI data from 928 people raises the possibility that dietary interventions might help protect against age-related cognitive decline.
Research article published in PNAS
“Diet modulates brain network stability, a biomarker for brain aging, in young adults,” by Lilianne R. Mujica-Parodi, Anar Amgalan, et al.
Article
A tree frog from Madagascar (Platypelis pollicaris), a species
impacted by recent climate change. Image credit: John J. Wiens.
Species survival under climate change
Niche shifts may be more important for species survival under climate change than range shifts, a study suggests.
Research article published in PNAS
“Recent responses to climate change reveal the drivers of species extinction and survival,” by Cristian Román-Palacios and John J. Wiens
Article
More Recent News
"Influence of Arctic sea-ice variability on Pacific trade winds," by Charles F. Kennel and Elena Yulaeva 10.1073/pnas.1717707117
"Fire synchronizes flowering and boosts reproduction in a widespread but declining prairie species," by Stuart Wagenius, Jared Beck, and Gretel Kiefer 10.1073/pnas.1907320117
"Archaeological evidence for two separate dispersals of Neanderthals into southern Siberia," by Kseniya A. Kolobova, et al. 10.1073/pnas.1918047117
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