When you think about the problems of didymo, a contamination in our beautiful freshwater streams, it's algae and slime that's transported easily by fishermen and by boats. Using conventional chemicals and physical clean-up techniques, it's impossible to clean that stuff up. That is where biotechnology has an answer, potentially, and yet it's next to impossible to consent that and to release it from outside research facilities. New Zealand needs to grow up and to accept that some of these things sound scary but actually they are good. 