The closing of the Vermont Yankee nuclear plant at the end of next year will leave the state with an $11 million dollar gap in its annual tax revenues. Representatives of the new Vermont Health Connect exchange will fan out across the state in the coming weeks to talk to residents and small business owners about the new health insurance system. Engineers, craft makers, teachers and science clubs will gather next weekend at Shelburne Farms for the two-day Champlain Mini Maker Faire.