Featured Videos for the Week of August 18, 2014
To feed your desire to learn something new every day, we've carefully curated a collection of fascinating videos for you to discover throughout the week. Curious about genetically improving intelligence, the Eagle Nebula, Robin Williams and more? Start exploring.
Check Out This Month's Most Popular Topic
from National Geographic
Key Facts In This Video
The average U.K. citizen will go through 80 liters of toothpaste in their lifetime. (0:03)
During World War II, German scientists developed radioactive toothpaste made with thorium. (0:49)
Learn how to make toothpaste at home: (2:01)