In January 2020, Penrith hit a record breaking 48.9 degrees celsius, the highest ever temperature recorded in the Greater Sydney area. As temperatures rise globally, cities like Sydney are grappling with ways to ensure urban areas remain liveable, such as tree planting.

But trees are not immune to heat, and some species are better suited than others for the task. So which species should be used? And which of the species that currently populate the Sydney cityscape are most at risk?

2SER Breakfast was joined by Dr Renée Prokopavicius, a Postdoctoral Researcher in Plant Ecophysiology at Western Sydney University, to find out.