According to the theory of left-brain or right-brain dominance, each side of the brain controls different types of thinking. Additionally, people are said to prefer one type of thinking over the other. For example, a person who is “left-brained” is often said to be more logical, analytical, and objective, while a person who is “right-brained” is said to be more intuitive, thoughtful, and subjective.
You are made of polymers, and so are trees and telephones and toys. A polymer is a long chain of identical molecules (or monomers) with a range of useful properties, like toughness or stretchiness — and it turns out, we just can’t live without them. Polymers occur both naturally — our DNA is a polymer — and synthetically, like plastic, Silly Putty and styrofoam. Jan Mattingly explains how polymers have changed our world.
You’ve heard about them, but do you how they work? Or why they suck? Let’s watch the science behind performance enhancers, including steroids, blood doping, and that stuff supposedly made out of deer antlers. You’ll never look at cheating the same way again!
The shape, contents and future of the universe are all intricately related. We know that it’s mostly flat; we know that it’s made up of baryonic matter (like stars and planets), but mostly dark matter and dark energy; and we know that it’s expanding constantly, so that all stars will eventually burn out into a cold nothingness. Renée Hlozek expands on the beauty of this dark ending.
This video is full of different types of optical illusions. And some very interesting information on these different optical illusions.
Your genome, every human’s genome, consists of a unique DNA sequence of A’s, T’s, C’s and G’s that tell your cells how to operate. Thanks to technological advances, scientists are now able to know the sequence of letters that makes up an individual genome relatively quickly and inexpensively. Mark J. Kiel takes an in-depth look at the science behind the sequence.