A recent Trends in Ecology and Evolution (TREE)  paper just came out (will be in print January 2015).  There has been one article about it so far:

http://www.takepart.com/article/2014/12/12/no-animal-needs-be-lone-wolf-simple-solution-saving-endangered-species

A 2010 Nature article eceived a large amount of press coverage. We are trying to raise awareness of the possibility that reduced seasonal Arctic ice coverage could lead to increased hybridization rates among Arctic taxa.

Here’s a subset of the press coverage (I also appeared on a Fox News show, but I can’t ethically provide a link to that network here):

National Geographic: http://news.nationalgeographic.com/news/2010/12/photogalleries/101215-pizzly-grolar-bear-polar-grizzly-hybrids-nature-arctic-global-warming-pictures/

LA Times: http://www.latimes.com/news/science/la-sci-arctic-animals-20101216,0,439283.story

NY Times: http://green.blogs.nytimes.com/2010/12/16/a-grolar-bear-the-perils-of-shrinking-arctic-ice/?ref=science

CBC: http://www.cbc.ca/technology/story/2010/12/15/science-arctic-hybrids.html

BBC:http://www.bbc.co.uk/news/science-environment-11986236

LiveScience: http://www.livescience.com/animals/hybrid-animals-arctic-climate-101215.html

OnEarth: http://www.onearth.org/article/grolar-bears-and-narlugas-rise-of-the-arctic-hybrids

UMass: http://www.umass.edu/loop/talkingpoints/articles/117465.php

El Mundo:
http://www.elmundo.es/elmundo/2010/12/15/ciencia/1292435526.html

Ultimo Segundo, Brazil: http://ultimosegundo.ig.com.br/ciencia/meioambiente/especies+hibridas+encontradas+no+artico+ameacam+biodiversidade/n1237868825292.html

Reuters: http://blogs.reuters.com/environment/2010/12/16/polar-bears-sure-but-grolar-bears/

Le Monde: http://www.lemonde.fr/planete/article/2010/12/16/la-fonte-de-la-banquise-donne-naissance-au-pizzly_1454236_3244.html

The Star (Toronto): http://mobile.thestar.com/mobile/NEWS/article/908923