Subtitled in Bulgarian11:21Older people are happierLaura CarstensenTranslated by Zvezdelina NaydenovaReviewed by Anton Hikov
Subtitled in Bulgarian17:42The stories behind the bloodlinesTaryn SimonTranslated by Zvezdelina NaydenovaReviewed by Ina Stoycheva
Subtitled in Bulgarian19:25Let's transform energy -- with natural gasT. Boone PickensTranslated by Zvezdelina NaydenovaReviewed by Darina Stoyanova
