Tate Modern’s Sunflower Seeds Cordoned Off for ‘Health and Safety’ Reasons

“Chinese artist Ai Weiwei carpeted the floor of the Turbine Hall with 100 million porcelain seeds and invited the public to walk across them.” Or even roll around in them. But all those people crunchng against all those seeds stirred up an awful lot of porcelain dust – stirring up, in turn, an awful lot of concern about breathing all that dust in.