Wednesday on the NewsHour, violence and tension surge in Israel. Also: The winners of the first Democratic debate, Supreme Court Justice Stephen Breyer discusses his new book, Ta-Nehisi Coates and his take on race relations, California's sequoias suffer from the…

Thousands of marijuana farms are depleting California's streams at the height of a historic drought, according to state scientists. Special correspondent Spencer Michels follows along as game wardens, biologists and engineers go in search of marijuana on privately-owned lands --…