Death is certain, so far as we know. But there's no physical or chemical law that says it must happen at a fixed time, which raises other, more philosophical issues.
Ramakrishnan's book is a dispassionate journey through current scientific understanding of aging and death, which basically comes down to an accumulation of chemical damage to molecules and cells.
"The question is whether we can tackle aging processes, while still keeping us who we are as humans," said Ramakrishnan. "And whether we can do that in a safe and effective way."
"Even if immortality - or just living for a very, very long time - were theoretically possible through science, should we pursue it?" Ramakrishnan likened the question to other moral ponderings.
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