This photograph taken on June 14, 2021 shows workers doing maintenance at the dam of Marina Barrage in Singapore. – A financial exchange offering carbon credits and investments in conservation projects is set to launch in Singapore, but it may struggle to convince sceptics of the value of controversial carbon offsets. – TO GO WITH Singapore-market-climate, FOCUS by Martin Abbugao and Sam Reeves (Photo by Roslan RAHMAN / AFP) / TO GO WITH Singapore-market-climate, FOCUS by Martin Abbugao and Sam Reeves (Photo by ROSLAN RAHMAN/AFP via Getty Images)