 Community support is what makes Planet Money and How I Built This possible, together with MDI Biolab, with an evening of hands-on science for all ages, Thursday, July 11th, in Bar Harbor. More at mdibl.org. Booth Bay Boat Rental, a division of Hodgdon Yacht Services, offering daily and multi-day powerboat rentals. Online booking at boothbayboatrental.com. This is Planet Money, from NPR.