The Forces of Attraction Why we are attracted to certain people can seem like a mystery. But twins marrying twins and May-December couples shed light on the biology guiding mate choice. By Jennifer ...

What is it about that person? You know the one... You can't explain it, but when they're in the room, no one else matters. You light up and feel more alive. Try to think of something clever to say ...

When you're attracted to someone, your whole body switches on. It's like hearing the first bars of your favorite song. And though it might feel like magic, it isn't random. It's just too complex for ...