Resolving the tensions between designing for millions and responding to the needs of individual classrooms can be difficult.

Today, we celebrate the towering life and legacy of Benjamin Franklin—printer and philosopher, inventor and diplomat, public servant and patriot, and one ...

Our prehistoric human ancestors relied on deliberately modified and sharpened stone tools as early as 3.3 million years ago.

Relief of Osiris from the Temple of Seti I, Abydos, Egypt. According to Egyptian mythology, Egypt’s first king Osiris sailed around the world spreading knowledge, exactly like the Feathered Serpent ...