Chemical Reactions

Life depends on chemical reactions to run. Whether you’re making some home brew or sitting in a car with an internal combustion engine, chemical reactions power the world. Sometimes, though, they can cause unexpected health issues.

NOW PLAYING (1 of 0)

G Word: Urine as Fertilizer

Learn how to neutralize urine so that it may be used to create fertilizer for house plants. Watch the process on Planet Green's "G Word."


Learn how to neutralize urine so that it may be used to create fertilizer for house plants. Watch the process on Planet Green's "G Word."
2:32

G Word: Urine as Fertilizer

Water is the perfect medium in which life can form and reform. Learn about the important chemical processes that can take place with water on Discovery Channel's "HowStuffWorks" show.
3:01

HowStuffWorks Show: Episode 4: Water Is Life

From the Discovery Health program Mystery ER, a college student is disoriented and feels as if she has been drugged. She begins develops bizarre symptoms, including hypersensitive hearing and spontaneous dyslexia.
11:55

Medical Mysteries: Chemical Reaction

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
3:02

Mystery Diagnosis: A Small Chance

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
3:28

Mystery Diagnosis: A Strange Loss of Sensation

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
3:50

Mystery Diagnosis: An Unquenchable Thirst

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
3:31

Mystery Diagnosis: Bizarre Lumps

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
3:41

Mystery Diagnosis: Black Legs

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
3:39

Mystery Diagnosis: Menstrual Leakage

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
2:50

Mystery Diagnosis: No Laughing Matter

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
3:58

Mystery Diagnosis: The Boy Who Couldn't Stop Eating

Check out this clip from Discovery Health's 'Mystery Diagnosis' to learn more about the process medical professionals use to determine the nature of a patient's illness.
3:38

Mystery Diagnosis: Unexplainable Swelling

Most Watched in Physical Science

Most Watched in Physical Science
2:53

100 Greatest Discoveries: Physics

Most Watched in Physical Science
1:23

100 Greatest Discoveries: Atomic Weight

Most Watched in Physical Science
1:15

Sci Fi Science: Invisibility Cloak

Most Watched in Physical Science
3:34

How Solar Cars Work

Most Watched in Physical Science
2:19

How Nanotechnology Works

Most Watched in Physical Science
2:39

100 Greatest Discoveries: Discovery of Plastics

Most Watched in Physical Science
1:38

100 Greatest Discoveries: The Periodic Table

Most Watched in Physical Science
2:54

100 Greatest Discoveries: Radiometric Dating

Most Watched in Physical Science
2:56

Assignment Discovery: Newton's Laws of Motion

Most Watched in Physical Science
3:22

Solved: Fingerprint Analysis

Most Watched in Physical Science
2:38

100 Greatest Discoveries: Uses

Most Watched in Physical Science
1:15

Assignment Discovery: Newton's First Law


Recent Videos in Physical Science

Recent Videos in Physical Science
4:37

What is eloptic energy?

Recent Videos in Physical Science
1:33

MythBusters: Expert Sound

Recent Videos in Physical Science
2:38

MythBusters: Tiny Bubbles In The Pool

Recent Videos in Physical Science
1:28

Energy 365: Renewable Energy Race

Recent Videos in Physical Science
24:36

Chemistry of Innovations

Recent Videos in Physical Science
1:05

Large, Dangerous, Rocket Ships: Bottle Rockets

Recent Videos in Physical Science
1:51

MythBusters: Pepper Spray Fireball

Recent Videos in Physical Science
1:15

Sci Fi Science: Invisibility Cloak

Recent Videos in Physical Science
2:19

Is It Possible: Water-Running Robot

Recent Videos in Physical Science
3:20

Machines: Telescope

Recent Videos in Physical Science
70:14

Time Travel

Recent Videos in Physical Science
226:53

Gravity