A broad category referring to the study of the physical universe including nature and biology.


Casually Explained: Evolution

Casually Explained is a great video series, here is Casually Explained explaining evolution. I suggest checking out the overarching YouTube Channel.










The Bed of Nails Principle

The bed of nails principle states that while laying on one nail is enough to puncture a person’s skin, laying on many distributed nails isn’t.