https://www.princeton.edu/main/news/archive/S26/91/22K07/ , which was the first big one, and which has sparked a great deal of research and debate.

and a newer UCLA study on HFCS effects on the brain: http://www.sciencedaily.com/releases/2012/05/120515150938.htm

and the recent Chemtrust study on causal links to diabetes: http://www.chemtrust.org.uk/documents/CHEM%20Trust%20Obesity%20&%20Diabetes%20Full%20Report.pdf

and the Clinical Epigenetics study of the link between HFCS and autism: http://www.clinicalepigeneticsjournal.com/content/4/1/6/abstract

and so forth. There are several reliable sources that say the evidence is still inconclusive (such as the Mayo clinic: http://www.mayoclinic.com/health/high-fructose-corn-syrup/AN01588 ), but "nonsense" is hardly an appropriate term. Most of the studies are new, and scientists tend to be on the conservative side. The same thing went on for years when the cancer-smoking link was being studied.

The calories in vs calories burned model of weight gain is very much oversimplified, as anyone who has dealt with weight problems would tell you.

Average intake has levelled off a little below its peak, but I would agree that "its dangerous to continue down the path we're on.