But after writing exactly 1000 words urging society to address overpopulation, the former first lady’s department returned it for final approval with most of it edited out.
Bindi used the simple analogy of throwing a party and having too many guests turn up to explain her point of view.
"How is it possible that our fragile planet can sustain these masses of people?" Bindi wrote.
"Think of it this way. Pretend for a moment that I’m having a party, inviting 15 of my closest friends. I’ve rented a room big enough to fit 15 people, I’ve bought 15 sandwiches for each of my friends to eat, and I have put together 15 party bags, one for each friend.
"My party is about to start, and I hear a knock at the door. My friends are here! Only, when I open the door, 70 of my friends are standing there wanting to come to the party!
"What do I do? My room is only big enough to fit 15, with 70 we won’t have any room to move and dance. I don’t have enough food. Do I divide the sandwiches among the 70 people? But then everyone will still be hungry. What about the party bags? Do I only give the party bags out to my closest friends? Isn’t that unfair to everyone else?
Terri Irwin, who is raising Bindi and her nine-year-old brother Robert at their Australia Zoo on the Sunshine Coast, said her daughter was less than impressed with the response from the US State Department.
"It’s interesting that she was asked to write an essay about the environment and included the consideration of population (growth) and they returned her essay edited and completely edited that out," she said.
"So Bindi wrote to Hillary Clinton’s organisation and said ‘what happened to freedom of speech? This is my opinion and I don’t want that edited out’."
The tough-talking teen – who onscreen has freed Willy, fought pirate animal poachers and hosted Bindi’s Boot Camp – pulled the essay from the publication in anticipation of a response.