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PNAS QnAs with NAS member and chemist Shaul Mukamel
PNAS QnAs
PNAS QnAs with NAS member and chemist Shaul Mukamel.
Wolf spider. Image courtesy of Modman/Pixabay.
Warming and predator-prey interactions in Arctic tundra
Researchers report links between warming and predator-prey interactions in the Arctic and suggest that predator activity can influence carbon and nitrogen dynamics in the Arctic, but that warming may alter or reverse such effects.
Image courtesy of Modman/Pixabay.
Blood test.
Acetyl-L-carnitine deficiency and major depressive disorder
A study finds that individuals with major depressive disorder had lower blood levels of acetyl-L-carnitine (LAC) than healthy controls, suggesting that LAC might aid the diagnosis of severe, trauma-associated depression.
Image courtesy of PublicDomainPictures/Pixabay.
View of the Two Medicine River.
Humans, climate, and fire regimes
A study explores historical fire activity associated with bison hunting by indigenous groups in North America, and suggests that fire use by indigenous hunters might have amplified the effect of climate variability on fire activity in the North American Great Plains.