Former President Donald Trump went on the defensive about his mental fitness for office at a rally in Pennsylvania on ...

Donald Trump defended himself against attacks on his age at a town hall event in Pennsylvania with just over two weeks left ...

Trump said he 'aced' cognitive tests and said all four top candidates should take them. He spoke at at town hall in Lancaster ...

As our family members age, we worry. We worry about their physical health and potential cognitive declines. If you are ...

Are cats smarter than babies? We can't say for sure without a direct comparison, but cats do beat babies in a word ...