Donavyn Coffey

To the naked eye, the night sky reveals only one moon. But how many moons have ever orbited Earth?

The brain doesn't have its own pain receptors, so why do headaches hurt so much?

What happens to wild horses that don't have shoes?

Smelling salts are found in Victorian novels to rouse fainting women and on the sports field to possibly help athletes. But how do they work?

Where does the first sunrise happen every day and which place sees the first sunrise of the New Year?

Habits can be hard to break, but here are a few ways you can do it.

A magnitude 4 marsquake that rocked the Red Planet in 2021 is the result of a massive meteor impact, two new studies revealed.

It's commonly said that walking will help to bring on labor. While it's no guarantee as it doesn't induce labor contractions, walking helps the cervix prepare for the birth.

Archaeologists in Cyprus have unearthed a broken rampart, or a part of a defensive wall, under a massive burial mound.

Blood is always red, and veins look blue or green because the skin filters light wavelengths differently.

A man's overzealous intake of vitamin D supplements ended poorly, requiring a hospital stay for over a week.

Genetic analysis of octopuses identified DNA sequences in their brains called transposons, which may help regulate learning.

Your body's cells are constantly replicating themselves, but the rate of renewal depends on where those cells are located and what they do.

Soap is great at getting rid of pathogenic bacteria and viruses because of its molecular structure.

Chowing down pet food may not be as safe as it used to be.

Milk isn't the same across species. Here's the science of why babies shouldn't drink cow's milk until they're older.

Is it the combination of the pineapple's acidity and the enzyme complex called bromelain that likely make your mouth sore.

Here's the science behind why some deep sea creatures — such as squids, sharks, sea spiders and worms — get so giant.

Here's the science behind how ovens and microwaves differ in the food-heating process.

An investigation is underway to determine if the school is linked with a cancer cluster.

Many people give up meat for ethical, health or environmental reasons. But is it OK to put a cat or a dog on a vegetarian or vegan diet?

Here are the top four (and a bonus fifth) elements that make up the human body.