Again, thanks to Forced Migration Current Awareness, we learned of a series of podcasts that deal with environmentally-induced migration :

Stephen Castles Speaks on Climate Refugees (BBC, May 2011) [access]

“Environmental Refugee” Not Accurate

for Pacific (Radio Australia, May 2011) [access]

Tuvaluans Don’t Want to be Called Refugees (Radio Australia, May 2011) [access]

Many thanks, fm-cab!