Petra Sijpesteijn and Birte Kristiansen: The rise and fall of the medieval Islamic Empire
In the 7th century CE, the prophet Muhammad united the people of the Arabian Peninsula through the formation of Islam. Over the next 30 years, caliphs conquered vast areas beyond Arabia, including their mighty neighbors the Persians and Byzantines. But an empire this vast was at risk of conflict and fracture. Petra Sijpesteijn and Birte Kristian...
Birte Kristiansen and Petra Sijpesteijn: A day in the Islamic Golden Age
It's 791 CE. As the morning sun shines on the Golden Gate Palace, brother and sister Hisham and Asma prepare for the journey of a lifetime: the hajj, a holy pilgrimage to Mecca. They intend to travel with the big hajj caravan— but a last-minute mishap threatens to undo months of careful planning. Birte Kristiansen and Petra Sijpesteijn detail a ...
CRISTIAN CHINA BIRTA: Formula de calcul al cantității de zâmbete disponibilă în 24 de ore
CRISTIAN CHINA BIRTA: Singurătatea eroului de cursă lungă | Cristian China Birta | TEDxBaiaMare
Cristian China Birta, Blogger si antreprenor 2.0 Exista eroi doar pentru ca noi ii validam. Povestile noastre despre erou creaza eroul. Cu cat un erou este mai departe de noi cu atat este mai admirat. Daca ne apropiem de el, incepem sa vedem omul din spatele eroului, si nu ne place sa-i descoperim vulnerabilitatile si defectele. Intrebarea care...