Charles Darwin
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Charles Darwin was a British
biologist and one of the most influential people of the
Victorian era. He was born in Shropshire in 1809.
He studied in
Edinburgh and at the University of Cambridge. At
Edinburgh, he started studying medicine. However, he
found it boring so went to Cambridge to do an Arts
degree. While at Cambridge, Darwin's interest in natural
history grew. |
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In 1831, Darwin joined
the HMS Beagle. The Beagle was a ship going on a 2 year
expedition. Although 2 years was the plan, the voyage actually
took 5! Darwin saw a lot on the voyage that encouraged him to
develop his theories of evolution.
When he returned,
however, he had many ideas and it took years to work out his
thoughts. He had so many reports on what he had seen that he had
to ask for a loan of £1,000 (about £73,000 now) to cover the
costs of publishing them.
He eventually released
his theories in several volumes. This took several years. After
releasing 'On The Origin Of The Species', his most famous book,
Darwin focused on plants. He did many studies on the way plants
bred and grew.
Darwin married his
cousin, Emma Wedgwood, in January 1839. They had 10 children,
although 2 died in infancy. Most of his children went on to be
very respected members of the scientific world
Charles
Darwin was responsible for the Theory of Evolution. He presented
evidence that all life came from one common ancestor. Over
millions of years, different species have adapted to their
habitats. He calls the adaptation process natural selection.
Natural selection
simply means that the living thing most suited to its
environment is more likely to survive to pass on its good genes
to its offspring.
For example, if a
chicken had a gene which meant it only had one leg, it would be
far less likely to survive than a chicken with two legs. It
would have difficulty moving around to find food compared to
other chickens. It would also be easy for hunters to catch.
Therefore, it would be less likely to reach an age where it can
breed and pass its on-legged genes on.
Darwin's theories
receive a mixed reaction. They clashed terribly with the
religious view that God created everything. This was called
'intelligent design'. The debate between evolution and
intelligent design is still going on today.
He outlines his theory
of natural selection in his book 'The Origin of the Species'.
The book was published in 1859, over 20 years after he had
returned from the voyage. Many people still read this popular
book today.
'On
the Origin of Species' was incredibly popular. It sold more
copies than were originally going to be printed. However, some
people dismissed Darwin's theories. Others said that natural
selection was just part of God's plans.
Darwin was brought up
to be religious. However, his voyage did change his views. He
said that he saw so much pain and suffering in the natural world
he found it difficult to believe that God had planned that. By
the end of his life, he described himself as an agnostic -
someone who wasn't sure whether they believed in the existence
of God or not. |