AKUAK, South Sudan (AP) — Flooding worsened by climate change is forcing a community in South Sudan to work constantly to keep water from encroaching on their land. The Akuak community of about 2,000 people has been layering plants and mud to build islands for generations in this swampy area along the Nile River, according to their chief. Increased flooding driven by climate change in recent years has made the islands harder to maintain. Community members spend hours each day dredging up material by hand to keep water from encroaching. South Sudan is experiencing catastrophic flooding for the sixth year in a row. It’s considered one of the countries most vulnerable to climate change.