So of course the next step for scientists would be to learn whatever can be learned from the pilot program in the just-cancelled study, and then design a new study and try again. I will highly support research projects of this kind, which now will have more benefit to my grandchildren than to my children, who are already almost fully grown up into adulthood.
P.S. A big hat tip to the Hacker News participant who found this news story, which is well reported and links to key online documents, for finding a great source about an important story. The key online documents are press releases from government offices, but this story adds a journalist's contacts with other sources and establishes context for the latest news on the study.
[1] "Statement on the National Children’s Study" 12 December 2014
http://nih.gov/about/director/12122014_statement_ACD.htm
[2] "National Children’s Study Has Great Potential to Expand Understanding of Children’s Health and Well-Being, But Key Design Elements Need Further Development for Study to Be Successful" 16 June 2014
http://www8.nationalacademies.org/onpinews/newsitem.aspx?Rec...