During summer last year, Penrith was the hottest place on earth. Among the asphalt and the concrete, the sun's heat was amplified with the mercury soaring to almost 50 degrees in several locations. The concrete jungle of western Sydney has been sweltering thanks to the urban heat island effect. Urban heat islands occur when artificial surfaces absorb and radiate heat, such as pavements and buildings. Urban heat islands will only be made worse with more hot days caused by climate change. However, there is a lot we can do to mitigate heat islands. Live in Parramatta, we took a deep dive into our sizzling city and what we can do to cool it down. We spoke to Thuy Nguyen and Ian Epondulan of the Voices for Power Campaign, and Stephanie Cunio from the United Workers Union.