Add Yahoo as a preferred source to see more of our stories on Google. Joe Biden and Donald Trump are, respectively, the oldest and second oldest presidents in American history. As both attack each ...

Nikki Haley, former ambassador to the United Nations, speaks at the Susan B. Anthony Pro-Life America headquarters in Arlington, Va., on April 25. (Al Drago/Bloomberg via Getty Images) Since ...

President Trump's recent comments about taking an "IQ test" at Walter Reed have sparked renewed debate about his cognitive fitness. Experts clarify the test was likely the MoCA, a dementia screening ...