Teenage sisters Melati and Isabel Wijsen of Bali have received many honors for their efforts to ban plastic bags. Above: They accept the 2017 “Award for Our Earth” from Germany’s Bambi Awards.

Teenage sisters Melati and Isabel Wijsen of Bali have received many honors for their efforts to ban plastic bags. Above: They accept the 2017 “Award for Our Earth” from Germany’s Bambi Awards.