ScienceTomorrow Today Viewer's QuestionTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience09/30/2013September 30, 2013Wassim Chaabane from the Kerkennah Islands in Tunisia wants to know why some people are right-handed and others left-handed.https://p.dw.com/p/19ptkAdvertisement