A record-setting heat wave has pushed California to the brink with the state facing its highest chance of rolling blackouts this year. Electricity demand forced the power grid operator to urge residents to conserve energy for an eighth straight day. Katherine Blunt of the Wall Street Journal joined Stephanie Sy to discuss the grid and what's being done to deal with the demands. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders