I'll take this opportunity to advertise one of my favourite science podcasts, Fronteiras da Ciência: http://www.ufrgs.br/frontdaciencia/ http://www.ufrgs.br/f

I'll take this opportunity to advertise one of my favourite science podcasts, Fronteiras da Ciência: http://www.ufrgs.br/frontdaciencia/ 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.