WTOP gets a look at how a “fossil preparator” uncovers the past at the Smithsonian National Museum of Natural History in D.C.

History told by the people who were there. For nine minutes every weekday, Witness History takes you back to moments which have shaped our world. Show more Eye-witness accounts brought to life by ...

While the technology behind sex-sorted semen is relatively new, the tool has become commonplace, particularly in dairy breeding. And as the process for sorting, processing and using sexed semen ...