Learn what the "this" keyword does in JavaScript in 100 seconds. And stay tuned for a few minutes of more advanced discussion after the credits.

The heat index, also known as the "apparent temperature," depicts how it actually feels outside by factoring in the moisture or water vapor that’s currently present in the air.

The Consumer Price Index (CPI) can affirm your feelings and reactions. It measures price movement on hundreds of products and services over a given period of time, from months to years.