Eds note: Many art historians (Leonardo expert Martin Kemp among them - more here) find Seracini’s claims over-the-top and his techniques rather questionable. At the time that this hit the press in 2011 a group of 150 art historians from museums including the New York Met and the National Gallery in London signed a petition to stop the work. However, this talk may be of interest to readers. Some suggested pre-talk reading here and here that counters many of Seracini’s claims. Leonardo’s lost Battle of Anghiari mural is one of…