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  1. Submitting your Manuscript - PNAS

  2. Instructions for Authors - PNAS

  3. PNAS

  4. The echo chamber effect on social media | PNAS

  5. Editorial Board - PNAS

  6. Where will climate change hit hardest? These interactive maps …

  7. Cloning humans? Biological, ethical, and social considerations

  8. The echo chamber effect on social media | PNAS

  9. PNAS

  10. The spreading of misinformation online - PNAS