Credit: Narwhal tusks can grow up to 13 feet long. Only males have the appendage that's actually a tooth. About one out of every 500 has two parallel tusks. (WTOP/Kristi King)

Unicorn of the sea: Natural History Museum exhibit explores the narwhal

Veterans Affairs Department fires former director of DC medical center

GW University launches new program to train STEM teachers

New Circulator buses feature digital screens, USB ports, wider doors

Georgetown football to host Harvard at RFK Stadium

Madison Marquette follows partner PN Hoffman to The Wharf