Volunteers collect rubbish during the annual "Big Bottle Count"

Volunteers work to clear rubbish from the banks of the River Thames, with Hammersmith Bridge in background as plastic bottles lie washed up on the bank during the annual "Big Bottle Count", run by the organisations Thames21 and #OneLess, by the Queen Caroline Draw Dock in London, Wednesday, Sept. 19, 2018. Volunteers are collecting rubbish from along the River Thames and counting the single-use plastic bottles, to gauge if the plastic waste problem is getting better or worse. [Photo: AP]