Considering that 1+1 always equals 2, there doesn't seem to be room for much innovation in math. But Sabino High School math teacher David Kukla won't let himself or his students be boxed in to such ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Nancy A. Youssef is a staff writer at The Atlantic covering national security and the Defense Department. She has written about U.S. national security for more than two decades, including at The Wall ...