<p><a href="https://www.scientificamerican.com/podcast/episode/stiffer-roads-could-drive-down-carbon-emissions/">Stiffer Roads Could Drive Down Carbon Emissions</a></p>

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Stiffer Roads Could Drive Down Carbon Emissions --- Support this podcast: https://anchor.fm/hummels/support

<p><a href="https://www.scientificamerican.com/podcast/episode/stiffer-roads-could-drive-down-carbon-emissions/" rel="noopener noreferrer">Stiffer Roads Could Drive Down Carbon Emissions</a></p>

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Stiffer Roads Could Drive Down Carbon Emissions

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Stiffer Roads Could Drive Down Carbon Emissions

Stiffer Roads Could Drive Down Carbon Emissions