If the stream isn't working, you might need a VPN. Some streaming sources are geo-restricted.
One of the most ambitious and exciting theories ever proposed—one that may be the long-sought "theory of everything," which eluded even Einstein—gets a masterful, lavishly computer-animated explanation from bestselling author-physicist Brian Greene, when NOVA presents the nuts, bolts, and sometimes outright nuttiness of string theory.
Einstein's Dream
String's the Thing
Welcome to the 11th Dimension
