Mathematicians, it's a rainy day but Susanna Post, the 2021 Arkansas Teacher of the Year, is on the hunt. Can you help in her scavenger hunt to find examples of parallel and perpendicular lines? Rise ...

The East African Rift System (EARS) is the world’s largest continental rift, stretching from Jordan to Mozambique. For years, geologists have been puzzled as to why EARS displays some deformations ...