This finding documents smoke-dried mummification of the dead, mostly in tightly bound crouched postures, from archaeological ...

Perhaps such a transition will be increasingly adaptive. Faced with growing ecological and social crises, the current ...

Cnidaria, the sister group of Bilateria, include corals, jellyfish, and sea anemones. They possess neurons, which are organized in a diffuse nerve net. It is generally agreed that cnidarian and ...

PNAS Terms of Access: “Proceedings of the National Academy of Sciences” and “PNAS” are registered trademarks of the National Academy of Sciences of the United ...

With the advent and widespread use of messenger RNA (mRNA) vaccines against severe acute respiratory syndrome coronavirus 2 ...

The National Academy of Sciences (NAS) publishes the Proceedings of the National Academy of Sciences (PNAS) as well as its open access sibling journal PNAS Nexus. PNAS was established in 1914 and is ...

A Biometric Study of Human Basal MetabolismNote: 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 ...

PNAS is committed to improving the evaluation of scholarly research outputs and is a signatory of the San Francisco Declaration on Research Assessment. We track a variety of article and journal ...

THE STORAGE OF HEAT AND ELECTRICITYNote: 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 ...

Metrics & Citations Note: 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 following ...

A technique is described for forming molecular hybrids between RNA in solution and the DNA of intact cytological preparations. Cells in a conventional tissue squash are immobilized under a thin layer ...

TWO THEOREMS IN GRAPH THEORYEmotions coordinate our behavior and physiological states during survival-salient events and pleasurable interactions. Even though we are often consciously aware of our ...