Is the world's toughest plastic bag ban working?

This week's Upside also looks at creative ways to slow climate change and meets the South African women who stopped an international nuclear dealThis week, The Upside has been focused on hopeful news about the environment, which will be a welcome reprieve for anyone who read Mayer Hillman's interview in the Guardian in which he concluded that climate change meant "we're doomed".As part of the Arctic Dispatches series, reporting from Alaska, Oliver Milman asked whether the catastrophic melting of Arctic ice could be reversed using an unlikely substance - sand. Continue reading...