President Obama delivered a passionate, if not brief, speech about energy efficiency Friday at a Walmart in Mountain View.

A federal lawmaker wants regulators to re-think the way they clean up some of the most toxic waste sites in the nation.

When Jose Antonio Vargas turned 16 years old, he did what almost every kid his age does. He applied for a driver’s permit. But when he went to the DMV, he got something unexpected: the truth about his immigration status.