Researchers have good reason to believe NAD might be the key to healthy aging.

It’s strange to say a molecule is getting “press,” but that’s exactly what’s happening to NAD (nicotinamide adenine dinucleotide) in publications ranging from Wired to Shape. NAD (pronounced en-aye-dee) is an essential molecule found in every living cell.

And other weird facts about your skin and the sun.

We need the sun. It’s how we grow food, stay warm, and survive on this planet we call home. But as usual, it’s possible to have too much of a good thing.