Companion to the major new BBC documentary series CIVILISATIONS, presented by Mary Beard, David Olusoga and Simon Schama Oscar Wilde said 'Life imitates Art far more than Art imitates Life.' Was he right? In Civilisations, David Olusoga travels the world to piece together the shared histories that link nations. In Part One, First Contact, we discover what happened to art in the...(展开全部)

Differential geometry arguably offers the smoothest transition from the standard university mathematics sequence of the first four semesters in calculus, linear algebra, and differential equations to the higher levels of abstraction and proof encountered at the upper division by mathematics majors. Today it is possible to describe differential geometry as "the study of structur...(展开全部)

Differential geometry arguably offers the smoothest transition from the standard university mathematics sequence of the first four semesters in calculus, linear algebra, and differential equations to the higher levels of abstraction and proof encountered at the upper division by mathematics majors. Today it is possible to describe differential geometry as "the study of structur...(展开全部)

La única novela que escribió, Carl Sagan imagina una gran aventura, el primer encuentro del hombre con otros seres inteligentes.

In December， 1999， a multinational team journeys out to the stars， to the most awesome encounter in human history. Who -- or what -- is out there?In Cosmos， Carl Sagan explained the universe. In Contact， he predicts its future -- and our own.

La única novela que escribió, Carl Sagan imagina una gran aventura, el primer encuentro del hombre con otros seres inteligentes.

At first it seemed impossible - a radio signal that came not from Earth but from far beyond the nearest stars. But then the signal was translated, and what had been impossible became terrifying. For the signal contains the information to build a Machine that can travel to the stars. A Machine that can take a human to meet those that sent the message. They are eager to meet us: ...(展开全部)

In December， 1999， a multinational team journeys out to the stars， to the most awesome encounter in human history. Who -- or what -- is out there?In Cosmos， Carl Sagan explained the universe. In Contact， he predicts its future -- and our own.

At first it seemed impossible - a radio signal that came not from Earth but from far beyond the nearest stars. But then the signal was translated, and what had been impossible became terrifying. For the signal contains the information to build a Machine that can travel to the stars. A Machine that can take a human to meet those that sent the message. They are eager to meet us: ...(展开全部)

阿诺德•汤因比（1889—1975），英国人，世界著名的历史学家，先后任职于牛津大学、伦敦大学和英国外交部，一生游历甚广，著述颇丰，其一反国家至上的观念，主张文明才是历史研究的单位，既用哲人的眼光，从宏观角度对人类历史与文明进行探讨，又以非凡的叙史才能，以历史学家的视野对人类历史与文明进行描述，以《历史研究》为代表的一系列著作为他赢得了世界性声誉，被誉为“近世以来最伟大的历史学家”。