The report, America’s Knowledge Economy: A State-by-State Review, issued by the Council of State Governments and the academic publisher Elsevier, assesses research output and impact from 2004 to 2013. The scholarly research publications produced in each state are a key barometer for innovation. Delaware had the second highest rate of peer-reviewed publication production nationwide. Delaware researchers produced 11.4 publications per million dollars in research and development (R&D) funding spent. Read more.