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.
21st June is known as summer solstice -- the day when the sun is directly overhead the Tropic of Cancer at noon -- officially marking the first day of the season of summer. It's the longest day of the year, in that we have the most hours of sunlight.