Take a graffiti tour through ancient Pompeii with Roman archaeologist Jacqueline DiBiasie-Sammons and discover what 2,000-year-old scribblings from antiquity can teach us about life in modern times. A fascinating reminder of what we leave behind for future generations.

How to keep your hometown from becoming a ghost town | John Paget

Some of the world's greatest artists, designers, photographers and architects showcase their work and visions onstage at the TED conference, TEDx events and partner events around the world. You can also download these and many other videos free on TED.com, with an interactive English transcript and subtitles in up to 80 languages. TED is a nonprofit devoted to Ideas Worth Spreading.