- Collected Articles
Special collections highlighting noteworthy articles
- Browse by topic
- Early Edition
- Front Matter
PNAS in the News
Top Stories
Health and social media usage
According to a comparison of the online profiles of 12 million Facebook users in California with public vital records, accepting,
but not initiating, online friendship requests was associated with reduced mortality risk, as were posting and being tagged
in photos, which are activities indicative of offline social interaction; further, for online-only communication channels,
such as text posts and messages, moderate activity levels were associated with low mortality risk. 
*
*
“Online social integration is associated with reduced mortality risk,” by William R. Hobbs, Moira Burke, Nicholas A. Christakis,
and James H. Fowler
10.1073/pnas.1605554113
Global pattern of influenza outbreaks
Researchers report a global pattern that links influenza outbreaks with absolute humidity and temperature. 
*
*
“Global environmental drivers of influenza,” by Ethan R. Deyle, M. Cyrus Maher, Ryan D. Hernandez, Sanjay Basu, and George
Sugihara
10.1073/pnas.1607747113
Dementia risk following natural disasters
Researchers report increased dementia severity among survivors of the 2011 tsunami in Japan.
*
*
“Increased risk of dementia in the aftermath of the 2011 Great East Japan Earthquake and Tsunami,” by Hiroyuki Hikichi, et
al
10.1073/pnas.1607793113
More Recent News
“Chilling-induced tomato flavor loss is associated with altered volatile synthesis and transient changes in DNA methylation,”*
by Bo Zhang, et al.
10.1073/pnas.1613910113
"Lifespan adversity and later adulthood telomere length in the nationally representative US Health and Retirement Study,"*
by Eli Puterman, et al.
10.1073/pnas.1525602113
"Impact of anthropogenic climate change on wildfire across western US forests,"*
by John T. Abatzoglou and A. Park Williams
10.1073/pnas.1607171113
*By clicking on this link, you will leave the PNAS website. The material contained in the link is provided for informational purposes. Any material, conclusions, or opinions presented in the link are not officially endorsed by PNAS or the National Academy of Sciences.
[11/16]
Other PNAS Media
- DNA sequencing with chain-terminating inhibitors
- Electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose sheets: procedure and some applications.
- One-step inactivation of chromosomal genes in Escherichia coli K-12 using PCR products
- Cluster analysis and display of genome-wide expression patterns
- Gene set enrichment analysis: A knowledge-based approach for interpreting genome-wide expression profiles
