Leave your feedback Share Copy URL https://www.pbs.org/newshour/show/pbs-newshour-weekend-full-program-aug-6-2016 Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Saturday on the News Hour... On this edition for Saturday, Aug. 6, Donald Trump endorses fellow republicans Ryan, McCain and Ayotte in a nod toward party unity. Later, in Florida, a once thriving ecosystem is struggle to survive. And, the lesser-known opioid at the center of a growing crisis of overdose deaths. Hari Sreenivasan anchors from New York. Listen to the Broadcast Subscribe to the Full Show Podcast Segments From This Episode Concerns grow as fentanyl fuels rise in opioid overdose deaths On the ground in Brazil as Olympic Games begin 3 min How septic tanks may imperil this Florida ecosystem 10 min