Berlin offers free entry for litter picking to make tourists do their bit
Visitors to Berlin could receive vouchers this summer for picking up litter. The BerlinPay scheme takes its cue from Copenhagen, linking green behaviour with enjoyable rewards.
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Source: Euronews
Visitors to Berlin could receive vouchers this summer for picking up litter. The BerlinPay scheme takes its cue from Copenhagen, linking green behaviour with enjoyable rewards.
Al Jazeera 
