Chemotherapy has saved millions of lives, but its origins date to the chemical warfare agent mustard gas. An investigative reporter details how doctors turned death and tragedy to the lifesaver we know today.
Two Covid vaccines showing a better than 90-percent effectiveness rate now have the data to seek emergency approval from the FDA. Then, a study shows that signs of concussion can be detected in a person's saliva. And finally, a new study finds that deflating soccer balls just a little could cut concussion injuries in the sport.