Subtitled in German15:42Building the musical muscleCharles LimbTranslated by Julian HenoReviewed by Lex Asobo
Subtitled in German19:35A solar energy system that tracks the sunBill GrossTranslated by Julian HenoReviewed by Valentina Chesh Wellbrock
Subtitled in German13:35The next age of governmentDavid CameronTranslated by Michaela HilbertReviewed by Julian Heno
Subtitled in German7:25Casting a spell on the celloCaroline LavelleTranslated by Wolf RuschkeReviewed by Julian Heno
