
This work opens by reminding us that sunlight—vital for life—has always been a double‑edged sword, and it extends that idea to the unseen radiations that have accompanied Earth since its birth. The author traces how humanity first harnessed fire, then, in the twentieth century, learned to generate far more energetic forms of radiation. By laying out the historical balance of benefit and risk, the book makes a clear case for why we must understand these forces before they outpace our ability to protect ourselves.
From that foundation the narrative turns to the machinery of inheritance. It walks listeners through the astonishing order of cell division, the role of chromosomes as the instruction manuals for every species, and the delicate choreography of mitosis. With vivid explanations of how radiation can disrupt this process, the author equips readers with a solid grasp of both the marvel of life’s blueprint and the subtle ways energetic particles can rewrite it.
Language
en
Duration
~1 hours (86K characters)
Series
Understanding the atom
Publisher of text edition
Project Gutenberg
Credits
Produced by Stephen Hutcheson and the Online Distributed Proofreading Team at http://www.pgdp.net
Release date
2017-10-13
Rights
Public domain in the USA.
Subjects

1920–1992
Best known for blending big scientific ideas with clear, lively storytelling, this hugely influential writer helped shape modern science fiction while also making science accessible to general readers. His work ranges from robot stories and the Foundation series to popular books on chemistry, history, and the Bible.
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1900–1975
A pioneering geneticist who helped turn evolution into a modern science, he showed how variation within populations drives change over time. His writing connected laboratory genetics with the big story of life on Earth.
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