On Assignment - Season 11

Rageh Omaar returns with Rachel Younger to revisit Turkey and speak to those who would rather live in a tent than risk living in an apartment and see the rubble possibly filled with harmful toxins that has piled up a year on from a deadly earthquake.

Rageh Omaar returns to Lithuania to speak to the citizens of the country offering unwavering support to Ukraine two years on from Russia's invasion. Louise Scott is in Sardinia to investigate how low birth rates are contributing to Italy's shrinking population and learns how a lack of jobs and good travel connections are putting young people off staying in the area to start a family. Debi Edward travels to Karachi, Pakistan, to the country's largest painted truck hub to meet the artists and drivers who make the decorative vehicles their business.

Dan Rivers reports from the Bahamas, one of the most vulnerable island nations when it comes to climate change, and Martin Stew investigates Norway's sustainable construction, asking how it could go mainstream. Nina Nannar meets a man who has gone through life changing leg-lengthening surgery to gain three inches in height in Los Angeles.

James Mates travels to Lithuania to meet with Russian opposition activists who are regrouping after the incarceration and death of Alexei Navalny and deciding what's next for those who stand against Putin. Antoine Allen is in Mayotte in the Indian ocean where the EU's small boats' immigration crisis threatens to destabilise the nation and Harry Horton joins the inaugural voyage of the new Brussels-Prague sleeper train and asks whether continental sleepers can compete with budget airlines.

Emma Murphy meets the women often abandoned by their families and communities in India, as their large population ages and the women live longer than men there's an increasing number of widows left behind. Romilly Weeks is in Switzerland exploring the country's vast network of private and public bunkers built during the Cold War that are now having a renaissance as tensions in Europe rise. Lucrezia Millarini finds out how techno music has been recognised as a part of German culture.

Lucy Watson reports on environmental efforts ahead of the Paris Olympic Games to make the River Seine safer for swimmers, while Rachel Younger examines Portugal's innovative, community-driven solutions to the threat of wildfires and the new EU taskforce set up to help. Ronke Phillips Pakenham explores West Africa's Adire fabric as it faces new threats from cheap imports, and follows the efforts to preserve this tradition in Nigeria.

James Mates travels to the Greek island of Santorini, the latest tourist destination to suffer from over-tourism, to find out how the social-media friendly holiday location manages its popularity without losing its identity. Barnaby Papadopulos is in Cyprus 50 years after the war that partitioned the island to hear about the thousands of Greek and Turkish Cypriots that disappeared and are still listed as missing and Faye Barker is in Cambados, Spain to learn about sustainable cockle harvesting.

Rachel Townsend is in Brazil to meet those still impacted by the Fundao Tailings dam collapse in 2015 that released 50million cubic metres of toxic waste into the River Doce. Sam Holder is in France, ahead of the first anniversary of the attack on Israel, where 38% of the Jewish population are contemplating leaving for Israel after recent election results. Geraint Vincent reports from South Africa where thousands of captive lions face an uncertain future after the government suggested phasing out the farming of the animals for trophy hunting.

Nina Hossain presents as Kafui Okpattah reports from on the African American population in Ghana, asking why they chose to make the African nation their permanent home ahead of the upcoming US election. Three young people in Gaza give their unabridged accounts of their year of war and Debi Edward is in Mongolia at a festival showcasing the skills of the Kazakh golden eagle hunters.

Nina Hossain hosts as Sejal Karia reports on the hurricanes in Florida as residents clean up the damage and ask what a new administration will do about weather emergencies. Rachel Townsend learns about dengue fever in Brazil and an innovative strategy to combat the virus by using mosquitoes to thwart transmission and Kaf Okpattah speaks to carpenters in Ghana about their tradition of decorating fantasy coffins.