A 430-million-year-old fossil reveals that the first leeches were ocean predators, not bloodsuckers. The discovery radically shifts the timeline of leech evolution by more than 200 million years.
National Geographic Explorer Paul Salopek is retracing the path of human migration. More specifically, the scientific community's best guess for the likely path of early human migration. While walking ...
History With Kayleigh Official on MSN
400,000-year tools: Ivory artifacts rewrite early human innovation
At the Paleolithic site of Medzhibozh in Ukraine, archaeologists identified ivory fragments shaped into tools nearly 400,000 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback