Economic risk is a nebulous term with a variety of definitions. In a nutshell, it is the risk that an endeavor will be economically unsustainable, for a variety of reasons ranging from a change in economic trends to fraudulent activities which ruin the outcome of the project.
The summer solstice arrives Sunday June 21. Those of us in the Northern Hemisphere know it as the longest day of the year.
June 21 is the longest day of the year, with 19 hours of daylight in Anchorage, 22 in Fairbanks, and 18 in Southeast. But from early May through September, days are considerably longer than at lower latitudes. Alaska's sky is light nearly all night long from late May to late July (unless you're out and about at 3am).