Video by Sarah Joseph and Jon Betz, Smithsonian Digital Studio; Text by Megan Gambino Benjamin Franklin invented swim flippers when he was 12 years old. Frank Epperson, age 11, conceived of the ...

Liver disease includes many conditions that damage the liver and reduce its ability to support digestion, energy storage, and waste filtration. Symptoms can be mild or absent, but severe signs include ...

Heart disease in kids can be present at birth or develop later from illness. Congenital heart disease affects about 1 in 100 babies born each year. Atherosclerosis may start in childhood, even without ...

Skylar Clarine is a fact-checker and expert in personal finance with a range of experience including veterinary technology and film studies. Memberships drive Costco's revenue, emphasizing the ...