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At least our genes are. The Nature website reports that establishing the age of each mutation in contemporary human populations is important to fully understand our evolutionary history and will help to us to develop new medicines for diseases caused by genes.

Many of these mutations have only recently arisen–approximately 73% of all of them (and 86% of the ones that cause disease) have arisen in the past 5,000-10,000 years, which sounds like a long time, but is a blink of an eye in evolutionary terms.
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Chemicals used as flame retardants are present as environmental pollutants all around the globe, including remote sites in Indonesia, Nepal and Tasmania, where no one wears clothes that are treated with these chemicals.

Researcher Amina Salamova says, "These findings illustrate further that flame retardants are ubiquitous pollutants and are found all around the world, not only in biota and humans but also in plants."
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We don’t hear much about Mad Cow Disease anymore (thank goodness), but scientists are studying the human form (Creutzfeldt-Jacob disease) because it has similarities to diseases that affect millions, such as Alzheimer’s, Parkinson’s, and Lou Gehrig’s Disease (ALS) (NOTE: Subscribers can still listen to these shows).
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