Remarkable fossils found in North Greenland have helped researchers solve a 500-million-year-old puzzle surrounding ...

During the mid-Holocene (ca. 6200–3000 BCE) and late Holocene (after 3000 BCE), the Eurasian steppe grew colder and drier. As ...

Half a billion years ago, a strange sea-dwelling creature called Mollisonia symmetrica may have paved the way for modern ...