Category Archives: Science

Why Do We Get Allergies?

YouTube subscriber Chase P. asks: Do a video on why humans have allergies. It’s that time of year when tissue companies nationwide rejoice at the excessive mucus caused by allergies. If you’re one of the unlucky, you might ask yourself why we get them anyway? Why would our immune systems react to seemingly harmless things like pollens, dust mites, and […]

Read more

Why Does Hypothermia Help People Survive in Some Situations?

Derek H. asks: Why does extreme lowering of body temperature sometimes help people survive when they’re otherwise dead for extended periods? We’ve all probably heard of a person being pulled from cold water after a seemingly unrevivable timeframe. Miraculously, they survive and more or less make full recoveries. A 7-year-old girl named Stella Berndtsson from Sweden currently holds the record […]

Read more

Who Really Invented Calculus

The following is an article from Uncle John’s Bathroom Reader Calculus involves the study of limits. By the time they were done arguing about who had invented it, Isaac Newton and G. W. Leibniz had probably both reached their limit as well. Science has seen a number of simultaneous discoveries. Michael Faraday and Joseph Henry independently discovered electromagnetic induction. Charles […]

Read more

Blue and Green Pigments Don’t Exist in the Human Iris, So How Do Some People Have Blue and Green Eyes?

Terran N. asks: Why do some people have different colored eyes? The Basics of Eye Color Eye color is a function of pigmentation both at the back of the iris (iris pigment epithelium) and in its stroma (the front of the iris), as well as the density of the cells in the stroma. In most cases these factors, and hence […]

Read more
1 2 3 4 19