DNA&#x27;s half-life is 521 years.<p><a href="http:&#x2F;&#x2F;www.nature.com&#x2F;news&#x2F;dna-has-a-521-year-half-life-1.11555" rel="nofollow">http:&#x2F;&#x2F;www.nature.com&#x2F;news&#x2F;dna-has-a-521-year-half-life-1.11...</a>