Einstein’s version of dark energy is known as the cosmological constant. It implies a fixed amount of dark energy in each ...

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 ...

Abstract Extracellular redox-active compounds, flavins and other quinones, have been hypothesized to play a major role in the delivery of electrons from cellular metabolic systems to extracellular ...

Open in Viewer (A) Schematic of a photocell consisting of quantum dots sandwiched between p and n doped semiconductors. Open circuit voltage and solar photon energy ℏνh are related by the Carnot ...

Open in Viewer Evolution of atmospheric CO 2 (a), methane (b), and nitrous oxide (c), and sampling intervals (d) over the past 20,000 years. The gray bar denotes the range of the preindustrial, ...

Recently, studies in Neurospora, Drosophila, and mammals have significantly furthered our view of the negative feedback nature of the circadian oscillator with the identification of interlocked ...

Recommender systems use data on past user preferences to predict possible future likes and interests. A key challenge is that while the most useful individual recommendations are to be found among ...

Edited by David M. Karl, University of Hawaii, Honolulu, HI, and approved December 9, 2014 (received for review August 8, 2014) ...

Electronic databases, from phone to e-mails logs, currently provide detailed records of human communication patterns, offering novel avenues to map and explore the structure of social and ...

Emotions coordinate our behavior and physiological states during survival-salient events and pleasurable interactions. Even though we are often consciously aware of our current emotional state, such ...

Because ecosystem responses to such variables may depend on the type of ecosystem, its species composition and soils, abiotic variables including climate, and the magnitude of the change in drivers, ...

We present a simple nitrogen (N) isotope model to investigate the partitioning of gaseous (fgas) vs. leaching (fleaching) pathways of N removal from the nonagricultural (i.e., unmanaged) terrestrial ...