01.05.2020 - By PBS NewsHour
On this edition for Saturday, January 5, tensions escalate in the Middle East amid an outpouring of grief over the killing of Iran's top military leader by a U.S. airstrike. Also, our ongoing series "Peril & Promise" examines the impact of climate change on communities along the Mississippi River in Louisiana and Missouri. Hari Sreenivasan anchors from New York.