leonardo da vinci

by Christian Sager | Nov 6, 2013

Leonardo Da Vinci wrote a great cover letter to Ludovico Sforza. Learn more about the letter at Stuff of Genius.

by Christopher Lampton | Jun 21, 2013

Da Vinci's designs were spectacularly ahead of his time. If they had actually been built, they might have revolutionized the history of technology. What were some of his most imaginative sketches?