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Health & MedicineVaccine Clears Major Hurdle: Injections offer new tool against cervical cancers
An experimental vaccine against the virus that causes most cancers of the cervix has passed a test typically needed for regulatory approval.
By Nathan Seppa -
PaleontologyRaptor Line: Fossil finds push back dinosaur ancestry
Fossils of a newly discovered raptor dinosaur species suggest that the reptile's lineage is older and more widespread than previously suspected.
By Sid Perkins -
19603
The discovery of the early raptor Buitreraptor may resolve one puzzle of the dinosaur-bird relationship. The late-Jurassic “first bird,” Archaeopteryx, seems closely related to dromaeosaurids, yet those animals appear to have lived later, in the Cretaceous.