Using A4 metric paper to explain everything in the Universe
This is a video by CGP Grey using the proportions of A4 metric paper to explain everything in the Universe. Seriously. It's clearly inspired by the classic Eames video Powers of Ten (which also zoomed in and out but using powers of ten instead of, uh, paper) but it stands on its own. It's inspiring and informative and premised on the fact that metric paper folds in half to the same ratio. He basically tries to explain the entire Universe but the paper thing might actually be the most impressive fact presented.
Keep going for the full video as well as the original Powers of Ten.
And the original Powers of Ten:

Boston Dynamics has a new robot named Stretch
Boston Dynamics has introduced a new robot named Stretch designed for automating box moving tasks in warehouses and distribution centers. Stretch's mobile base allows it to go...

Simone Giertz designed a chair for needy pets
YouTuber Simone Giertz designed and built a chair for needy pets. My dog would really prefer it if I turned myself into a dog bed. Since I'm...

Visualizing the history of The Universe using 13,799 dominoes
Science communicator Kurtis Baute set up a 300 meter long row of dominoes to represent a timeline of history from the Big Bang to now, with each...

Video demonstration of the self-righting shape Gömböc
This is a video demonstrating the unique properties of a gömböc: a shape that only has two equilibrium points (one stable and one unstable) instead of the...

A Video Of Bill Nye Answering Common Science Questions Asked On Twitter
This is a video of Bill Nye answering some basic science questions asked by Twitter users, who presumably have science reports due tomorrow and didn't want to...

Pixar Releases Video Of Interconnected Pixar Universe Easter Eggs
This is a video recently released by Pixar highlighting some of the Easter eggs that show just how connected the movies in the Pixar universe are. Some...