The face of Leonardo da Vinci

The http://www.ted.com/ is a link where you can find diferent presentations and it is very useful for improving your English level.

Once you choose your topic you could listen the news and if you don't understand properly you could use the subtitles version. Another interesting thing is that in that link you could choose and interactiv transcript of the speech.
A good example of it is this:
http://www.ted.com/talks/siegfried_woldhek_shows_how_he_found_the_true_face_of_leonardo.html

This topic is about the different portraits of Leonardo da Vinci and how Siegfried Woldhek found the true face of Leonardo.