As many Melburnians can attest, this summer has been particularly hot, with the Bureau of Meteorology reporting January temperatures up to 2.2 degrees above average. As global efforts to limit temperature rise below 1.5 degrees continue, the threat of extreme heat across Australia grows ever more pressing.
Extreme heat is one of the deadliest natural hazards in Australia, responsible for at least 473 deaths between 2000 and 2018. Beyond its toll on human health, heatwaves also carry a significant financial burden, costing Victoria an estimated $87 million annually. To mitigate this challenge, we must explore every available solution to cool our cities.
Nature-based solutions, which harness the power of natural ecosystems, are critical to urban cooling efforts. One such approach is the Tiny Forest model—dense pockets of native vegetation planted within just 200 square meters. These mini forests help combat the urban heat island effect, enhance biodiversity, and manage stormwater runoff. By partnering with local councils, Earthwatch is establishing Tiny Forests in urban areas, bringing much-needed relief to heat-stressed communities while helping councils meet their greening, canopy, and biodiversity targets. However, with 77% of land in Melbourne privately owned and out of council reach, relying on public land alone is not enough.
