{"version":"1.0","type":"rich","provider_name":"Acast","provider_url":"https://acast.com","height":250,"width":700,"html":"<iframe src=\"https://embed.acast.com/$/5f0062798fac302dc40ecfa2/5f0062adb5869a0ace634fad?\" frameBorder=\"0\" width=\"700\" height=\"250\"></iframe>","title":"Stiffer Roads Could Drive Down Carbon Emissions","description":"By hardening the nation's streets and highways, trucks would use less fuel&nbsp;and spare the planet carbon emissions. Christopher Intagliata reports.","author_name":"Scientific American"}