Intersect Episode 1 - Mary, Mary, Quite Contrary. A story about the trials and tribulations of 18th Century Mary Edwards as she fought to do her science and keep her family afloat. Produced by Commutercating Science. @commutersci on Facebook and TwitterOne of Mary's Petitions to the Board of Longitude: https://cudl.lib.cam.ac.uk/view/MS-RGO-00014-00011/241