There are always some questions for small things you encounter in your daily life. Here are 15 answers to things you've always wondered about.

1. Why do your fingers and toes get wrinkly in the shower?



Scientists have figured out why our fingers and toes get wrinkly during bath-time. This is because the outer layer of skin on your hands and feet — called the epidermis — is different than the skin on the rest of your body. The thicker layer of skin on your hands and feet contains more dead skin cells than other parts of your body. These dead skin cells soak up water like an efficient sponge, while thinner skin on the rest of your body is less affected. The good news is that wrinkled fingers and toes are a painless, temporary situation. The human body is amazing.

3. Why is the sky blue?



Much like our veins appear blue, it has everything to do with wavelengths and blue light. Blue light scatters more than the other colors in the spectrum because it travels as shorter, smaller waves.

5. Why do we say "cheese" when we get our pictures taken?



The origin is unknown, but when you say "cheese," the act of saying the word turns the corners of your mouth lift up, your cheeks lift, and you show off a toothy grin. It looks like a smile, and since smiling is what we do in pictures, the instruction seems pretty practical.