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May 12, 2016 09:00 AM ET // Jennifer Viegas
Got dandruff? If so, two types of dominant bacteria are likely fighting for real estate on the top of your head.
Apr 28, 2016 12:00 PM ET // Amanda Onion
Variations in a single gene appear to play a major role in how old we look.
Apr 21, 2016 06:46 AM ET
"Get more sun!" we're told, when we need to bulk up on our vitamin D. Fair enough, but how does merely walking outdoors turn us into vitamin factories?
Apr 4, 2016 05:00 AM ET
If you get a serious enough cut, you're going to carry a scar around with you for the rest of your days, and it's going to behave a bit differently than your normal skin. How do scars heal, and why don't they just disappear?
Feb 25, 2016 04:15 AM ET
Are you forever reaching for lip balm? Chapped lips are a way of life for some people. How do they get like that? Can we prevent it from happening?
Jan 29, 2016 11:54 AM ET
The first cut might not always be the deepest, but one thing's for sure: If it's deep enough, you're going to have a scar. How come skin sometimes leaves reminders of our pain?
Aug 18, 2015 01:01 PM ET
If you've ever wondered why putting a foot outside of the covers at night cools you down on a warm, tossy-turny night, Trace has the answer.
Jun 8, 2015 08:24 AM ET
Every Monday, we answer some of YOUR questions! This week, let’s tackle hair. Why do we all have different hair?
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