Syria is still using chemical weapons against its own people, scientific analysis carried out for the Telegraph has claimed.
The newspaper says soil samples taken from the scene of three recent gas attacks "show sizeable and unambiguous traces of chlorine and ammonia present at the site of all three".
International protocol bars nations from using "asphyxiating, poisonous or other gases" during war.
More top news
Authorities say Ai Weiwei failed to disclose a previous "criminal conviction" - though his supporters say he was never even charged.
The supermarket made the change after getting feedback from customers who said they felt under pressure as they finished their shop.
Harry Potter fans have been left sorely disappointed after the slightly misleading hashtag #NewHarryPotterBooks began trending on Twitter.