When residents of a slum cluster in the New Delhi area heard that the Group of 20 (G20) summit was to be held in the city, barely 500 metres from their homes in Janta Camp, they expected it would benefit them.

Phuket’s Clean the Beach Boot Camp (CBBC) has been cleaning the island’s beaches for five years. Each two weeks, on a Saturday morning, volunteers assemble for a free beach workout from island fitness leader Krix Luther and then, in return, they put on their gloves, grab a big bag and pick up rubbish.