Summary:

- Australia's summers are becoming longer and more extreme, with hotter temperatures and more frequent heatwaves. This is due to the effects of climate change, which is causing global temperatures to rise.

- Researchers have found that the length of the summer season in Australia has increased by several weeks over the past few decades. This means Australians are experiencing longer periods of hot, dry weather each year.

- The increased frequency and intensity of heatwaves can have serious impacts on human health, the environment, and various industries. It is crucial for Australia to take action to reduce greenhouse gas emissions and adapt to the changing climate.