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Everyone is drinking, peering into their screens and swiping on the faces of strangers they may have sex with later that evening. “Ew, this guy has Dad bod,” a young woman says of a potential match, swiping left.Her friends smirk, not looking up.“Tinder sucks,” they say. At a booth in the back, three handsome twentysomething guys in button-downs are having beers.The impact of this event on climate, ecosystems, and human evolution remains the subject of ongoing debate (3–8), partly because the precise age of the Toba eruption is poorly constrained (Table 1).Layers of volcanic ash and codeposited sulfate aerosols in primary context represent widespread, geologically instantaneous time markers that can be used to synchronize sedimentary and ice-core records separated by hundreds to thousands of kilometers.Representing scholarship from more than 90 countries, this authoritative database provides selective indexing of historical articles from thousands of journals in a wide variety of languages.Coverage includes world history, military history, women’s history, history of education and much more.
We report an astronomically calibrated Ar age of 73.88 ± 0.32 ka (1σ, full external errors) for sanidine crystals extracted from Toba deposits in the Lenggong Valley, Malaysia, 350 km from the eruption source and 6 km from an archaeological site with stone artifacts buried by ash.The Toba supereruption in Sumatra, ∼74 thousand years (ka) ago, was the largest terrestrial volcanic event of the Quaternary.Ash and sulfate aerosols were deposited in both hemispheres, forming a time-marker horizon that can be used to synchronize late Quaternary records globally.Conclusions Except for hypnotics, several types of interventions reviewed had positive overall effects on chronic disease outcomes.There was substantial heterogeneity among studies with respect to study sample, interventions, and outcomes.
Objectives Associations between shift work and chronic disease have been observed, but relatively little is known about how to mitigate these adverse health effects.