In 2013, a vaccine policy inadvertently launched a massive natural experiment that would offer new clues about the roots of ...

The authors note, “Apparent image compression artifacts present in SI Appendix, Fig. S6 A and B were questioned by MD Anderson. Due to the age of the paper, we were not able to locate the original ...

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 ...

International trade affects global air pollution and transport by redistributing emissions related to production of goods and services and by potentially altering the total amount of global emissions.

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 publication. Citation ...

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 publication. Citation ...

This work was performed under Contract No. AT(30-1)-1045 with the Division of Biology and Medicine of the Atomic Energy Commission and was supported by a Senior Research Fellowship (SF·97) from the ...

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 publication. Citation ...

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 publication. Citation ...

The Proceedings of the National Academy of Sciences (PNAS) is committed to providing an accessible experience for all users. We strive to ensure that our website and published content are accessible ...

Dive into PNAS Front Matter for editorials, interviews, science news, and commentary that offer expert perspective on today’s most important research findings.

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 publication. Citation ...