Trent Nikolic speaks to Mark Holden, who is this week's Remarkable Australian.

Listen to Weekend Mornings from 9am, on 2GB Sydney and 4BC Brisbane

Trent Nikolic speaks to&nbsp;Mark Holden, who is this week's Remarkable Australian.
Listen to Weekend Mornings from 9am, on&nbsp;<a href="https://www.2gb.com">2GB Sydney</a> and <a href="https://www.4bc.com.au/">4BC Brisbane</a>

Weekends with Luke Grant, 9am to 1pm every Saturday and Sunday on 2GB.

Weekends with Luke Grant, 9am to 1pm every Saturday and Sunday on 2GB.