The 209-million-year-old fossil offers clues to the evolution of the reptiles, which have more than 150 named species ...

Archaeologists in Peru have shared findings of an eight-year study that revealed an ancient city that formerly served as an ...

Abobotulinum toxin A and prabotulinum toxi A had the most rapid onset of effect on glabellar strain among the botulinum toxin A formulations examined.