For two and a half centuries, scientific discovery has shaped the American story. It has broadened our understanding of the natural world, improved national security, and uncovered new frontiers—from ...

In cooperative breeding birds and mammals, some offspring give up the chance to breed independently and instead help their parents to breed. This type of cooperation involves a division of labor ...

The authors note that Table 1 appeared incorrectly. Specifically, the third entry of the row labeled “Mouse (49)” appeared as “1.51 e −10” and should instead appear as “1.51 e −9.” This typo occurred ...

Using well-established microarchaeological sampling methods, we reached a precise radiocarbon date of 800 BC for the Siloam Pool’s monumental water dam in Jerusalem. This date is a critical link ...

THE NATURE OF BOND ORBITALS AND THE ORIGIN OF POTENTIAL BARRIERS TO INTERNAL ROTATION IN MOLECULES ...

Institutional legitimacy is essential for democracies, yet public trust and confidence in the United States Congress are at an all-time low. A significant predictor of attitudes toward Congress is ...

With scientific integrity and responsibility in mind, the National Academy of Sciences, the Annenberg Public Policy Center of the University of Pennsylvania, and the Annenberg Foundation Trust at ...

As the last great ice sheets were retreating and the Pleistocene Epoch was ending, humanity began an epic journey. For hundreds of thousands of years, our ancestors had survived by hunting animals and ...

Dunnett et al. (1) conclude that current and predicted priority areas for wind and solar energy development (renewable energy areas, REA) overlap minimally with important conservation areas (PA) in ...

As policy makers are increasingly interested in implementing nudge-type interventions, it is essential that we understand under what conditions they can improve policy-relevant outcomes to make the ...

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 ...

Plastic waste causes harm to marine life and has become a major global environmental concern. The recent COVID-19 pandemic has led to an increased demand for single-use plastic, intensifying pressure ...