Many people have an appearance of dark circles on the lower eyelids, and they have many different causes.
Eggs are tiny wonders, but even wonders can go wonky sometimes. We look at everything from double-yolkers to eggs with no shell at all.
It's all about the chemistry. Adding lemon can enhance the flavour and enjoyment of tea, and change its colour, but its best not to expect any extra boosts to your health.
Whether or not masks can protect against invading or escaping bugs depends on the type of mask and material.
The internet conspiracists are half right: most lights we have inside do emit UV, but not enough to harm us.
The umbilical cord drops off a baby's belly button after birth. What happens on the inside is far more fascinating.
There are a few reasons why smartphones, tablets and PCs start to seem less snappy over time.
Chicken eyes are stranger than you think: they can look up and down at the same time.
A reader wants to know why our noses run just because it's cold.
Why is it the flu virus is so deadly compared to the common cold virus?