Karl Sven Woytek Sas Konkovitch Matthew Kruszelnicki, often referred to as "Dr Karl", is an Australian science communicator and populariser, who is known as an author and a science commentator on Australian radio, television, and podcasts.

Helsingborg, is a city and the seat of Helsingborg Municipality, Scania (Skåne), Sweden. It is the second-largest city in Scania and ninth-largest in Sweden, with a population of 113,816 (2020). Helsingborg is the central urban area of northwestern Scania and Sweden's closest point to Denmark: the Danish city Helsingør is clearly visible about 4 km (2.5 mi) to the west on the other side of the Øresund.