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

Remembrance of phytoplankton’s pastNote: 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 appear immediately ...

An ancient immune pathway enables animal metamorphosisH. Song, O. H. Hewitt, S. M. Degnan, Arginine biosynthesis by a bacterial symbiont enables nitric oxide production and facilitates larval ...

This study offers insights into early human–pig interactions during the initial stages of pig domestication in the Lower Yangtze region of South China. By integrating microfossil analysis of dental ...

The distribution of pore space within the crust and whether the pores are filled with liquid water, solid ice, or are empty is an extremely important issue for understanding the inventory and history ...

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 ...

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Contributed by John B. Goodenough, September 30, 2016 (sent for review August 24, 2016; reviewed by Ken Poeppelmeier and Jean-Marie Tarascon) ...

In March 1835, a young Charles Darwin was high up in the Andes and struggling to cook supper. “Our potatoes after remaining for some considerable time in the boiling water were nearly as hard as ever, ...

Shrub recruitment, a key component of vegetation dynamics beyond forests, is a highly sensitive indicator of climate and environmental change. Warming-induced tipping points in Arctic and alpine ...

Edited by Mariana F. Wolfner, Cornell University, Ithaca, NY, and approved July 16, 2021 (received for review May 24, 2021) ...

Vivid, saturated structural colors are conspicuous and important features of many animals. A rich diversity of three-dimensional periodic photonic nanostructures is found in the chitinaceous ...