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This is a false equivalence. Climate chance is a political and economic issue, not a technical or scientific one. If we stopped all work on space-science tomorrow, the scientists and engineers wouldn’t suddenly channel their time and energy into implementing a carbon tax, move fossil fuel subsidies to solar and wind subsidies, or retrofit every building to be more energy efficient. Climate change has known solutions, we just need to implement them.

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And even for the stuff that does need new inventions or discoveries to make it work or work more cheaply/efficiently, you'll still probably not get enough scientists and engineers working on it until there is a market created for the output via the political and economic things you mentioned.

What are some known solutions to climate change? As far as I know it is a purely technological issue and we have zero viable solutions or any real ideas how to tackle the problem.

Zero viable ideas? Renewable energy, electrification of transport, carbon capture via machine and/or natural (trees). These are all possible and doable if it were not for the political atmosphere around the problem.

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