The placebo effect, where you can take something dopey like a sugar pill and somehow feel better, has baffled scientists ever since they've been aware of it. Would it surprise you to know the effect may not be in your head but in your genes?
Trace brushes us up on the ABCs of DNA and then recounts the findings of new research that could rewrite what we thought we knew about inherited traits.
Aside from the pleasurable feelings that come with it, evolutionarily speaking why do humans have to have sex to keep the species going when it doesn't seem the most efficient way to go?
A baby created with DNA from three people could be born as soon as this year.
Flatulence, diarrhea, rashes and other health issues have been with some humans and their ancestors for up to a million or more years.
DNA has been observed moving from one cell to another for the first time in animals.
Genes primarily affecting males, as well as family environment help explain why so many terrorists and killers are men, including brothers.
Think you are all European or African? DNA reveals that many of us are actually of mixed heritage.
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