Air pollution in Scotland has remained within legal limits for the first time, according to environmental campaigners.
Friends of the Earth Scotland (FoES) say effects of the March 2020 lockdown were enough to keep overall pollution levels low for the entire year.
They are urging ministers to work with councils to ensure the reductions can be maintained sustainably.
The Scottish government says air pollution levels had been improving even before the pandemic.
The sudden fall last year came when the first lockdown removed most vehicles from city centres where air quality levels are monitored.
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