Re: Neil deGrasse Tyson Lists 8 (Free) Books Every Intelligent Person Should Read
Neil deGrasse Tyson explains the decline of Islamic science
or 3:30 from http://tune.pk/video/2603611/neil-degrasse-tyson-the-islamic-golden-age-naming-rights
Difficult to find non-youtube videos. 
Of course, he simplifies stuff and plays down Mangol invasions.