You've probably heard someone use the phrase "blood red," but have you ever wondered if all blood really is red in humans?
Why do corpses float? Find out on this Moment of Science.
The chemicals that cause this reaction are stored in our nerve endings, and when we die, they’re gradually released.
Kimberly Sessions, of Atlanta, Georgia wrote to A Moment of Science with the following question: “I know why the ocean is still salty: evaporated water leaves the salt behind. But how did it get salty in the first place?”