Why Don't We All Have Cancer?

Thanks to Cancer Research UK!
Links to LEARN MORE and SOURCES are below.
follow me:
What is cancer?
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Visualizing the prevention of cancer: /
10 cancer MYTHS debunked: /
other cancer articles:
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Stirling Engine:
Stirling Engine: VIDEO:
dying cells:
dead outer-layer of skin (the HORNY layer):
human skin in dust:
mistakes in DNA replication:
how long it takes cells to divide:
not all genetic mutations causes cancer:
leading causes of death (in US):
unbalanced skin damage:
Giraffe tongues:
DNA repair mechanisms:
the Selection Shadow:
life expectancy:
Living after cancer diagnosis stats:
losing cells:
Cancer and the metaphor of war:
Cool image gallery:
extra: why do we age and die?
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