Everyone gets bored from time to time. But I was wondering--what is boredom exactly, scientifically speaking?
Say you're about to take a test or give an important presentation at work, would you rather be calm and collected or angry and agitated?
Why is it that when you put salt on a melon, the melon seems sweeter, but then if you overdo it, the melon turns salty? Find out on this Moment of Science.
This process is called osmosis; it dilutes the sugar-water inside the cells. But all the water coming in raises the pressure inside the cells so that eventually, the cell walls burst.
This might be why so many people gain the weight back after dieting. With higher levels of ghrelin in their blood, they wind up even hungrier than they were before, even when they stop dieting. Currently, drug companies are looking for safe ways to decrease the amount of gherlin in the blood.