Tagged With dna

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The sun's ultraviolet radiation is dangerous to our skin cells because it damages our DNA. That's why sun exposure can cause cancer, and why sunscreen is so important (even apart from its power to prevent sunburns). There are sunscreens that claim they can help your skin repair that damage — and, it turns out, they actually might (might!) work.

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There are approximately 10 million questions I'd like to ask my cat, Herbert. "Why do you chew on my purse?" "Why do you get scared when I lotion my hands?" "Do you love me?" "Do you hate me?" At the very top of the list however, is: "Can you tell me your life story?" Bert was plucked off the streets of Harlem a few years ago and brought to the shelter where I adopted him, but I don't know anything about him prior to that.

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A DNA-editing technique called CRISPR keeps popping up in the news, in one medical breakthrough after another. In theory, CRISPR can find any problem area in DNA, snip it out, and replace it with a fresh set of nucleotides. But in real life, that cut-and-paste job isn't always straightforward.

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When in doubt about who the father of a baby is, just do a paternity test. That seems like a no-brainer, especially since DNA testing has come a long way so it can provide quicker and more accurate results. But what if a man doesn't want to find out if he's the father? Is it legal to refuse a paternity test? Let's find out.