Tech billionaire Elon Musk is making bold predictions about the impact that artificial intelligence and humanoid robots will have on society in the not-too-distant future. Speaking at the U.S.-Saudi Investment Forum Wednesday, Musk claimed that work will become optional for human beings, poverty will be eliminated and monetary currency will be "irrelevant." | AP

Work continues on the construction of the ballroom at the White House where the East Wing once stood. Here are new images showing the ongoing construction. | AP

What if your immune system started attacking you, instead of protecting you? The Associated Press is looking at autoimmune diseases, the immune system's dark side. | AP