While discussing his plans for a physical, President Trump once again bragged about the score he achieved on his last ...

Like many teachers, Jim Pukys is accustomed to posing a fundamental question to students at the end of each algebra lesson: Did you understand? Unlike most teachers, though, he believes he has a ...

Natural selection uses duplicated genes as raw material for functional innovation, co-opting their existing features to new functions. Understanding genetic innovation requires two questions to be ...