This week on Fronteras:
--Navajo farmers in Shiprock, New Mexico are scrambling to save their crops following the Gold King Mine spill.
--Biologists are tracking the impact of the spill. So far, fish and bugs are okay.
--Mine pollution is nothing new. Mines have leaked wastewater for decades
--More than a month after Sandra Bland was found hanged in her Hempstead, Texas jail cell, concerned citizens keep a daily vigil there.
--We remember the father who fought to integrate Dallas public schools.