Why is it that when you put something metal in the microwave, you get a firework display, and yet the inside of the microwave is made out of metal?

Why do milk and orange juice or orange juice and toothpaste taste so disgusting together?

I know it sounds a bit crude, but I was wondering why farts seem to smell a bit worse and linger longer when we're in the shower?

I was wondering if you could tell me whether my male dog is sensitive to my menstrual cycle? I've brought a puppy and he got very irritable when I was at a certain stage of my cycle, and when I was ovulating he kept biting me. Now I'm over my period, he's calmed down a lot. Do you think this might be related?

What is the fifth taste you can sense on your tongue?

When someone meets someone else, is there a special hidden smell that couples have between them, so that if you were then to split up and meet someone else, you'd have that same kind of chemistry? Is that how you know someone is the right person for you?

Why do we get cravings for certain foods, especially when it's for combinations of foods that we normally don't like to eat? My friend is pregnant and she now wants to eat the strangest of things.