The Most Important Things So Far, Seriously

Human history is marked by a continual series of discoveries … but which ones have made the most difference? In this playlist, the Science Channel explores the stories behind history's most crucial discoveries, from blood transfusions to astronomy.

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100 Greatest Discoveries: Atomic Weight

On the Science Channel's "100 Greatest Discoveries," learn about John Dalton's atomic theory and how it became the system we use now in determining atomic weight.


On the Science Channel's "100 Greatest Discoveries," learn about John Dalton's atomic theory and how it became the system we use now in determining atomic weight.
1:23

100 Greatest Discoveries: Atomic Weight

On the Science Channel's "100 Greatest Discoveries," learn how German chemist August Kekule created a written model to visualize the chemical structure of atoms.
2:47

100 Greatest Discoveries: August Kekule's Written Model

English physician William Harvey's studies on blood flow were breakthroughs in understanding the human heart and the circulatory system. Learn more about blood flow on the Science Channel's "100 Greatest Discoveries."
2:43

100 Greatest Discoveries: Blood Flow Theory

Austrian physician Karl Landsteiner discovered that not all human blood is the same, and that there are four different blood types. Learn more about the beginnings of blood transfusion on the Science Channel's "100 Greatest Discoveries."
2:03

100 Greatest Discoveries: Blood Transfusion

On the Science Channel's "100 Greatest Discoveries," learn how the work of Joseph Gay-Lussac and Amedeo Avogadro led to the discovery of new compounds.
1:10

100 Greatest Discoveries: Combining Atoms

Groundbreaking research by Alfred Wegener reveals that all the continents were once connected as one single land mass he called Pangaea. Learn more about Wegener's continental drift theory on The Science's Channel's "100 Greatest Discoveries."
2:12

100 Greatest Discoveries: Continental Drift

Through his hot air balloon experiments, physicist, Victor Hess discovers the phenomenon and effects of cosmic radiation. Learn more about cosmic radiation on The Science Channel's "100 Greatest Discoveries."
1:23

100 Greatest Discoveries: Cosmic Radiation

Learn about the discovery of plastic on the Science Channel's "100 Greatest Discoveries."
2:39

100 Greatest Discoveries: Discovery of Plastics

Weather and climate studies got their start with meteorologist Leon Teisserenc de Bort's discovery of the Earth's layers. Learn more about the Earth's layers on The Science Channel's "100 Greatest Discoveries."
1:19

100 Greatest Discoveries: Earth's Atmospheric Layers

Bernard Brunhes' study of volvanic eruptions led to the discovery of the Earth's magnetic field reversal. Learn more about Brunhes' findings on the Science Channel's "100 Greatest Discoveries."
2:34

100 Greatest Discoveries: Earth's Magnetic Field

On The Science Channel's "100 Greatest Discoveries," learn how the experiments of Humphry Davy became a breakthrough in electrochemistry.
1:26

100 Greatest Discoveries: Electrochemistry

In an attempt to understand the behavior of atoms, chemist Gilbert Lewis created a model that theorized that atoms form bonds through their electrons. Learn more about chemical bonds on the Science Channel's "100 Greatest Discoveries.
1:39

100 Greatest Discoveries: Forming Bonds with Electrons

Through calculated cross breeding of garden peas Gregor Mendel discovered a pattern of dominant and recessive traits which led to groundbreaking advances in the field of genetics. Learn more on The Science Channel's "100 Greatest Discoveries."
2:15

100 Greatest Discoveries: Genetics and Gregor Mendal

On the Science Channel's "100 Greatest Discoveries," watch as Bill Nye examines Charles Lyell's study of rock formations and how they revealed that the process of geological change was slowly developed over time.
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100 Greatest Discoveries: Geological Change

On The Science Channel's "100 Greatest Discoveries," learn how Louis Pasteur discovered how to "pasteurize" to keep things germ free.
1:30

100 Greatest Discoveries: Germ Theory Origins

It was American geochemist David Keeling who helped make the link between global warming and carbon dioxide emissions. Learn more about his studies on The Science Channel's "100 Greatest Discoveries."
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100 Greatest Discoveries: Global Warming and CO2

Sulfa is a chemical substance that can cure and prevent bacterial infections. Learn more about its discovery on The Science Channel's "100 Greatest Discoveries."
1:41

100 Greatest Discoveries: Invention of Sulfa Drugs

The Science Channel's "100 Greatest Discoveries," looks at the work of Joseph Priestly and Antoine Laurent Lavoisier the pair who has been credited as the ones who discovered and invented oxygen.
1:09

100 Greatest Discoveries: New Air Oxygen

What could cause an ice age? Find out as Milton Milankovitch's calculations of the Earth's orbit and angle of axis is examined on The Science Channel's "100 Greatest Discoveries."
1:43

100 Greatest Discoveries: Periodic Ice Age

On The Science Channel's "100 Greatest Discoveries," Bill Nye and geologist, Dr. Neal Driscoll, visit the California coastline where the Pacific and North American plates collide to help explain the phenomenon and effects of plate tectonics.
2:05

100 Greatest Discoveries: Plate Tectonics

The discovery of radiation was a major breakthrough in chemistry. By studying radiation, Henri Becquerel discovered radioactivity. Learn more about radioactivity on the Science Channel's "100 Greatest Discoveries."
1:39

100 Greatest Discoveries: Radioactivity

Bertram Boltwood's study of decaying radioactive uranium in rock formations provided insight into calculating the age of the Earth. Learn more about radiometric dating on the Science Channel's "100 Greatest Discoveries."
2:54

100 Greatest Discoveries: Radiometric Dating

One of the dynamic principles of geology is explained with Harry Hess' discovery that the sea floor was spreading and the concept of subduction. Learn more about sea floor spreading on The Science Channel's "100 Greatest Discoveries."
1:11

100 Greatest Discoveries: Sea Floor Spreading

The melting of glaciers is one of the most visible effects of global warming. See it captured on film and learn how the emission of fossil fuels may contribute to current warming trends on The Science Channel's "100 Greatest Discoveries."
1:57

100 Greatest Discoveries: Shrinking Glaciers

On Science Channel's "100 Greatest Discoveries," learn why every atom, when burned, has a different color.
2:45

100 Greatest Discoveries: Signature Light of Elements

Einstein's study of relativity led to the now famous equation e=mc squared. Learn more about this equation on The Science Channel's "100 Greatest Discoveries."
2:14

100 Greatest Discoveries: Study of Relativity

Before Friedrich Wohler created urea, scientists believed that organic substances were unable to combine with inorganic substances. Learn more about the discovery of urea on the Science Channel's "100 Greatest Discoveries."
2:31

100 Greatest Discoveries: Synthesis of Urea

Anesthesia allowed surgeries to be completely painless for the patient. Learn how it was discovered on the Science Channel's "100 Greatest Discoveries."
2:38

100 Greatest Discoveries: The Beginning of Anesthesia

The Smallpox Vaccination represents a man made product being capable of interfering with disease. Learn more on The Science Channel's "100 Greatest Discoveries."
2:26

100 Greatest Discoveries: The Beginning of Vaccinations

A cathode ray tube (CRT) is an instrument that showed that there was an invisible force, electrons, that exist in our world. Watch the CRT at work on the Science Channel's "100 Greatest Discoveries."
2:26

100 Greatest Discoveries: The Cathode Ray Tube

Learn about the center of the Earth on The Science Channel's "100 Greatest Discoveries."
1:27

100 Greatest Discoveries: The Center of the Earth

On the Science Channel's "100 Greatest Discoveries," take an in depth look at our planet with host Bill Nye, as he examines the Earth's inner and outer core.
2:39

100 Greatest Discoveries: The Core of the Earth

Learn about the work of Joseph Priestley and how it ultimately led to the discovery of oxygen on The Science Channel's "100 Greatest Discoveries."
2:22

100 Greatest Discoveries: The Discovery of Oxygen

On The Science Channel's "100 Greatest Discoveries," learn about the discovery that a healthy diet with the necessary vitamins prevented many diseases without much effort.
1:56

100 Greatest Discoveries: The Discovery of Vitamins

Diabetes would still take countless lives if it were not for this unique drug. Learn more about the discovery of insulin on The Science Channel's "100 Greatest Discoveries."
2:02

100 Greatest Discoveries: The Invention of Insulin

On The Science Channel's "100 Greatest Discoveries," learn about the discovery of a Mid-Atlantic Ridge -- a 12,000 mile long mountain range underneath the Atlantic Ocean.
0:57

100 Greatest Discoveries: The Mid Atlantic Ridge

Dmitri Mendeleev's discovery of the periodic table gave scientists an easier way to teach elements to students. Learn more about the periodic table on the Science Channel's "100 Greatest Discoveries."
1:38

100 Greatest Discoveries: The Periodic Table

In 1846 Vienna, childbed fever caused death among many pregnant patients. Consequently, Dr. Ignaz Semmelweis began an experiment where his doctors washed their hands. Learn more about this experiment on the Science Channel's "100 Greatest Discoveries."
2:50

100 Greatest Discoveries: Theory on Germs

Thanks to research done by Ernest Rutherford and Marie and Pierre Curie, we now have many useful and life saving materials made from radioactive materials. Learn what they are on the Science Channel's "100 Greatest Discoveries."
2:38

100 Greatest Discoveries: Uses

Antonie van Leeuwenhoek is known as the first microbiologist. He was able to construct his own microscope and discover microorganisms. Learn more on The Science Channel's "100 Greatest Discoveries."
2:27

Understanding: Antonie van Leeuwenhoek

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