On June 10, 7PM-8:30PM, the Blue Hill Observatory will host a webinar, A Furious Sky: The Five-Hundred-Year History of America’s Hurricanes, in which local historian Eric J. Dolan will discuss his book of that title. To support the nonprofit work of the observatory, there is a registration fee ($10 for BHO members, $15 for others). Register to make a donation, get sign-in credentials for the webinar, and optionally buy a copy of his book.