SciShow
Oxygen is Killing You
Prevent cell destruction from free oxygen in your body by eating antioxidants such as blueberries, pecans, cranberries, and dark chocolate. An interesting video discusses the dangerous side of oxygen. From rust to free radicals, viewers...
Crash Course
White Dwarfs and Planetary Nebulae
Like a phoenix, planetary nebulae rise from the ashes of a star's demise. Young science scholars view stars in the white dwarf phase and the planetaries that sometimes occur in the aftermath. The video explains the composition of...
Crash Course
Deep Time
Are our universe's days numbered? Yes and no, depending on how you look at it. Travel as far into the future as possible in a video describing the five ages of the universe. The narrator begins the tale in current days, which are the...
Crash Course
The Milky Way
Where does Earth fit in the grand scheme of things? Find out in an intriguing video filled with facts and beautiful images! Learners journey to the center of the Milky Way to discover how our galaxy works. The narrator describes the...
Numberphile
Consecutive Coin Flips
In a consecutive coin flip game, some outcomes far exceed others. Viewers watch a video in the Numberphile Coins series that shows that a heads-tail sequence is more likely than a heads-heads sequence. This occurs even though the...
Crash Course
Crash Course World History #14: The Dark Ages How Dark Were They?
John Green teaches you about the so-called Dark Ages, which it turns out weren't as uniformly dark as you may have been led to believe. While Europe was indeed having some issues, many other parts of the world were thriving and...
PBS
Pbs Learning Media: Crash Course World History: The Dark Ages... How Dark Were They, Really?
John Green teaches you about the so-called Dark Ages, which it turns out weren't as uniformly dark as you may have been led to believe. While Europe was indeed having some issues, many other parts of the world were thriving and...