Kate Adie presents stories from Ukraine, Nigeria, the US, Mexico and an archipelago in the Arctic Ocean.

News this week of the discovery of another mass grave in the southern Ukrainian city of Mariupol has left families with missing relatives, fearing for their plight. And as media access has grown increasingly limited, understanding what really happened in Mariupol has become less clear. Hillary Anderson has spent much of the year trying to find out.

In Nigeria, the case of Mubarak Bala, who was sentenced to 24 years in prison for blasphemy, has thrown into the spotlight the limits on freedom of expression. Across the country, atheists, face discrimination at work and even violence. Yemisi Adegoke followed Mubarak's case and learned what can happen to those who decide to live openly without faith.

Residents of Jackson, Mississippi have long complained about their failing water system. And this summer, the crisis came to a head. Jackson’s residents were faced with dirty brown water coming from their taps, or no water at all - but the crisis is far from over. Nick Judin met some of the city’s most vulnerable residents.

The UN Secretary General this week warned that the world is on a 'highway to climate hell' as world leaders gathered for COP 27, in Egypt. Kate Vandy travelled to Svalbard – a Norwegian archipelago in the Arctic Ocean, which is warming six times faster than anywhere else on the planet.

Every year, the start of November brings the traditional Mexican holiday The Day of the Dead. People paint their faces, wear flowers in their hair, and hang skeleton-themed decorations in the streets. But in Mexico City, Olaf Furniss wonders whether today’s festivities are veering from tradition.

Presenter: Kate Adie