Public Health Wales estimates air pollution contributes to up to 1,400 deaths a year in Wales.
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Fireworks
Leeds City Council is to set up a formal inquiry over the "anti-social" use of fireworks across the city.
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The star said throwing flares was "not cool" after fan Stacey Andrew was hit by a flare at a gig.
Read more20,000 New Year's Eve fireworks tickets to go on sale
The final 20,000 tickets for London's New Year Eve fireworks will go on sale next Thursday, City Hall has announced.
A global television audience will be watching as more than 100,000 ticket-holders gather opposite the London Eye to welcome in the new decade in style.
More than 12,000 fireworks are expected to be set off.
Tickets must be purchased in advance to attend the fireworks and are priced at £10.
Stacey Andrew says it was "like someone let a firework off on my chest" after being hit by a flare.
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Pyrotechnics went off above a war memorial as hundreds of people observed the two-minute silence.
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Gwent Police is investigating and said the consequences "could have been horrific".
Read morePolice investigate after fireworks were thrown at a homeless couple sleeping in a tent.
Katie McEvinney
BBC Scotland news
The event at a wind farm near Glasgow offers a safe space for anxious dogs affected by Bonfire Night celebrations.
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Six police officers are injured and 15 people are arrested after Bonfire Night fireworks chaos in Leeds.
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