Page 220 - DK Children's Encyclopedia

The story of...

The sciences

For thousands of years, people have been
observing the world around them and coming

up with ideas to explain why things behave
the way they do. Science is about answering

questions with ideas, evidence, and experience.

Notches around
the edge were
lined up with
Some of the earliest objects in the sky.
doctors were ancient
Egyptian women,
5,000

Child making Curing diseases
a wave in a years ago. In 1928, Scottish scientist
bottle Alexander Fleming noticed how
a mold called penicillin killed
bacteria. This discovery led to
a type of medicine called
1. Bacteria
growing antibiotics. They have been
killing germs in the human
body ever since.

Experiments 3. Bacteria
In ancient Greece, a man dies
called Aristotle said that people 2. Penicillin
should look at nature and carry introduced
out experiments to find answers
to their questions. Scientist do
experiments to test their ideas
and to make new discoveries. Renaissance
Starting in the 15th
century, the Renaissance
was an explosion of ideas that
transformed science and art in
Europe. Leading experiments,
gathering evidence, and sharing
ideas became popular—this
Compasses helped
explorers to travel led to new inventions
the world and and discoveries.
discover new ideas.

Early compass
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