Two police officers have been injured in violence during a loyalist flag protest in Belfast city centre.
A heavy police presence tackled around 200 people who gathered in the Shaftesbury Square area of the city.
A water cannon was used to disperse crowds of people when bottles and missiles were thrown at police officers.
More top news
Pollution claimed nine million lives in 2015, with air pollution from vehicles and factories accounting for 6.5m deaths, researchers found.
Donald Trump has given himself a "10 out of 10" for the response to the widespread hurricane devastation Puerto Rico suffered.
Police in Los Angeles have opened an investigation after another sexual assault allegation was made involving Harvey Weinstein.