Based on current climate trends, the technological innovation that could play a significant role in addressing environmental issues threatening Australia is "Using electric cars could help slow climate change."
Rationale:
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Climate Change Mitigation: Electric vehicles (EVs) produce significantly lower greenhouse gas emissions compared to traditional internal combustion engine vehicles, especially when charged from renewable energy sources. This transition can help reduce overall emissions, contributing to efforts to slow down climate change.
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Energy Transition: Australia's energy sector is moving towards renewable sources such as solar and wind. Integrating EVs into this system can enhance the stability of the grid and promote the use of clean energy, further reducing reliance on fossil fuels.
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Air Quality Improvement: Transitioning to electric cars not only helps to combat climate change but also improves local air quality, which is crucial for public health, especially in urban areas.
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Innovative Infrastructure: The proliferation of electric vehicles can prompt investment in charging infrastructure and smart grid technology, which can enhance energy efficiency and further integrate renewable energy sources.
While water catchments and related technologies could address issues such as water availability and overfishing, the widespread adoption of electric vehicles aligns more directly with mitigating climate change, which is a pressing concern for Australia given its susceptibility to severe weather events, droughts, and other climate-related challenges.