The worst drought in decades is gripping eastern Africa -- parching landscapes, killing livestock and creating a humanitarian crisis. Driven by climate change, it's also leading to civil strife, as shepherding communities battle each other for scarce resources. Special correspondent Jack Hewson and producer Georgina Smith report from the Wajir province of northern Kenya. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders