http://www.ufrgs.br/frontdaciencia/
It is in portuguese, but one of the older episodes from season 5 is a very fun and informative interview with prof Heinrich about these burrows.
http://www.ufrgs.br/frontdaciencia/
It is in portuguese, but one of the older episodes from season 5 is a very fun and informative interview with prof Heinrich about these burrows.