The document summarizes several important scientific inventions and discoveries: 1) Thomas Edison invented the light bulb, one of history's greatest inventions, which comes in different shapes and sizes. 2) Albert Einstein developed the Theory of Relativity, which explains space and time through the formula E=mc^2 relating energy, mass and light speed. 3) Jonas Salk's polio vaccine eradicated polio in the US, the disease having caused muscle paralysis, and infected Franklin D. Roosevelt. 4) Charles Drew enabled the storage of blood for up to 6 weeks, making it available when needed. 5) Marie Curie discovered radioactive radium and polonium, which can treat

1. Light Bulb by Thomas
Edison
The invention of the light bulb in the 19th
century was one of the greatest invention in
history. They come in all different shapes and
sizes.

2. Theory of Relativity by
Albert Einstein
The Theory of Relativity explains the
structure of space and time. E=mc^2 is the
formula for the relationship between energy,
mass, and the speed of light.

3. Polio vaccine by Jonas
Salk
Poliomyelitis, or Polio is a disease caused by
a virus. It causes muscle paralysis. The
vaccine eradicated Polio in the United States.
The 32nd president of the United Sates had
polio.

4. Storage of blood by
Charles Drew
The ability to store blood made it possible to
have blood available when needed. Now
blood can be stored up to 6 weeks.

5. Radium and Polonium
discovered by Marie
Curie
They are radioactive materials that can be
used to treat some cancers and illumination.
Care has to be taken with use because they
are very dangerous elements.

6. They were chosen in this order because light bulbs are used more
frequently by almost everyone. Understanding the structure of space
and time is important because it has led to a lot of other inventions.
The polio vaccine and transfusion of blood have saved many lives.
Because of how dangerous radium and polonium are, their use is
restricted to most serious matters.