California governor democratic candidates Tom Steyer and Xavier Becerra are in a ad war, with both campaigns threatening legal action over political attacks....

ABC News' Matthew Glasser and Robert Lunsford, American Meteor Society editor, break down the fireball seen across the Northeast last weekend....

NYPD Commissioner Jessica Tisch warned that the Big Apple will face a "threat environment" this summer that has never been seen in history -- and it'll come with a bill estimated to reach $92 million....