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Air-breathing vertebrates incorporate a fraction of isotopically anomalous air O2 in their body water. The 17O isotope anomaly of air O2 (expressed as Δ’17Oair) is related to atmospheric CO2 concen ...
Efforts to anticipate and adapt to future climate can benefit from historical experiences. We examine agroclimatic conditions over the past 50 y fo ...
Reconstruct the intertropical convergence zone over the Indo-Pacific Warm Pool with extended records and empirical orthogonal function ...
Discover groundbreaking research on psychological and cognitive sciences, exploring brain function, behavior, and mechanisms shaping human cognition.
Journal Club posts are short news stories featuring a recent important, timely journal article selected by one of our Journal Club panelists, who are post-doctoral associates and graduate students in ...
A Biometric Study of Human Basal MetabolismNutrition Laboratory and Station for Experimental Evolution, Carnegie Institution of Washington ...
Dive into PNAS Front Matter for editorials, interviews, science news, and commentary that offer expert perspective on today’s most important research findings.
The Compressibility of Media under Extreme PressuresNote: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not ...
Feedbacks from terrestrial ecosystems to atmospheric CO 2 concentrations contribute the second-largest uncertainty to projections of future climate. These feedbacks, acting over huge regions and long ...
Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of hospital-acquired infections that are becoming increasingly difficult to combat because of emerging resistance to all current ...
We present a systematic study of the Raman spectra of optical phonons in graphene monolayers under tunable uniaxial tensile stress. Both the G and ...
In this article we propose a method for detecting community structure and apply it to the study of a number of different social and biological networks. As we will show, when applied to networks for ...
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