I found a link to the PBS video I watched a few weeks ago. Secrets of the Dead, the Lost Vikings, filmed circa 1999. It examines what happened to the Norse Greenlander society and speculates about what happened to the last members, of which at the time we had little or no evidence.

https://www.youtube.com/watch?v=v-r374XWaUc (now a dead link)

Dr Sutherland's work circa 2012 to find evidence at Baffin Island (Eirikr the Red called it Helluland, modern Inuktitut calls it Qikiqtaaluk).

http://news.nationalgeographic.com/news/2012/10/121019-viking-outpost-second-new-canada-science-sutherland/

This link goes to a Change.org petition to reinstate Dr Sutherland to continue her work. Last update from December 2015.

https://www.change.org/p/stephen-harper-dr-patricia-sutherland-s-ground-breaking-research-on-an-early-viking-norse-presence-in-arctic-canada-is-gravely-threatened-and-i-would-like-to-see-her-dismissal-from-the-museum-of-civilization-ended/u/14770818

Update: I want to share some links to the Greenlandic runes, thanks to http://www.arild-hauge.com/.

• Runes of Greenland
• Runic inscription from Greenland