Thursday on the NewsHour, the effects of this year's extreme weather persist as storms lash Europe and Maui marks a month since the start of its disastrous wildfires. We speak with the U.S. ambassador to the United Nations as concerns grow over another potential genocide in Darfur. Plus, Tunisia's president tightens his grip on power by jailing rivals as citizens flee in increasing numbers. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders