Posted: Jul 17, 2013 05:01 PM MDT
Updated: Jul 15, 2016 01:17 AM MDT
Dr. John answers your questions about back pain and the link between smoking and gastritis.
The Library of Congress is established, spaceflight claims its first human casualty, the Unabomber kills his last victim, and South Korea clones a puppy, all on this day.
Click on to see which 10 countries spend the most on health care per person, according to a new study from the medical journal The Lancet.
Shakespeare dies, the first public school in the U.S. opens, Wrigley Field opens, The Rolling Stones release "Sticky Fingers," Coca-Cola releases New Coke, and the first YouTube video is uploaded, all on this day.
People gathered in over 600 cities around the world at March for Science rallies in support of science and evidence-based research.