Two common findings from past research on sleep duration are that people who sleep too little suffer from various health consequences and that people from some cultures often have sleep durations that ...

Mirror symmetry is a prominent feature of “coconformational mechanically helical chirality.” Nevertheless, when a topological molecule cannot be continuously deformed into its mirror image within ...

In 2006, historian Jo Guldi recalled Google Books as nothing less than a revelation. The company had started digitizing millions of books from university and public libraries. With a single click, ...

Heart failure with preserved ejection fraction (HFpEF) represents a significant global health burden, yet effective pharmacotherapies remain elusive. The angiotensin-like 1 receptor, also known as the ...

Why rates of phenotypic evolution vary across the tree of life is still not well known. A widespread view holds that fast rates result from the colonization of empty adaptive zones, or sets of similar ...

Monsoon circulations are crucial for the livelihood of more than two billion people on Earth. Here, we show that the underlying dynamics that causes the monsoon rainfall is that of a seasonal ...

Conventional elastic metasurfaces for energy focusing are limited by chromatic aberration, preventing broadband operation. Here, we propose an elastic metasurface with achromatic focusing across an ...

Clownfishes in coral garden. Image credit: iStock/fototrav. How sea anemones influence clownfish diversification Well-known for their bright color patterns, clownfishes are found on tropical coral ...

Granular materials-from soils to pharmaceutical powders-exhibit mechanical behavior governed by interaction between solid grains and interstitial fluids. Capillary forces critically control these ...

Edited by Mark Thiemens, University of California San Diego, La Jolla, CA; received December 20, 2024; accepted March 18, 2025 ...

In 2011, the United Nations’ (UN's) General Assembly unanimously approved a resolution that, for the first time, put happiness on the global agenda. The resolution recognized the pursuit of happiness ...

Wildlife biologist David Wiens was extremely nervous the first time he shot an owl. He steadied himself in the evening darkness of an Oregon fire road, pointed his shotgun at a big barred owl perched ...