› added 2 weeks ago

4

TIL how canyons are formed

Read more youtube.com

via reddit.com

8aOLG TIL there's only one type of toothpaste that actually rebuilds enamel and damage to teeth, as opposed to creating the environment for teeth to repair themselves. Using a chemical called NovaMin that was initially used in the 60s to quickly repair the bones of troops in battle.
9Aa6 TIL Amtrak will attach privately-owned rail cars to their trains so you can travel between points in North America.
kJ00E TIL that the south hemisphere receives ~7% more solar energy due to orbital perihelion (closest position to the sun) happening in 3 january
R5dQ1 TIL: There's a New Type of Glasses That Autofocus Automatically Based on What You're Looking At
7GdP TIL the first mutiny in space occurred in 1974 aboard the Skylab 4 (x-post r/space)