When it comes to land, Singapore's biggest challenge is being small.
One man who is working to alleviate the impact of Singapore's land constraints is ANU alumnus, Mark Wong.
Through his work with the Singaporean National Parks Board, Mark is trying to ensure the sustainability of Singapore's natural habitat while also exploring the potential of urban greenery.
"Despite having little land to work with, we strive to keep the city of Singapore lush and green. So one of the most pressing issues is learning to balance urban development with creative greening initiatives and the preservation of natural ecosystems."