Life's Little Mysteries

Schisms within the church have led to more and more denominations over the millennia.

Desert temperatures can fluctuate greatly between day and night, due to the poor heat-retaining properties of sand and a lack of humidity.

Trends, set by royals and movies, help to influence a dog breed's popularity.

Why do people breathe so loudly when they're asleep?

Do you need to exercise extra moderation with the champagne this Valentine's Day?

To scare off the queen's enemies.

The rubber pencil illusion works because our brain can't keep up.

The Amazons were fierce female warriors of ancient Greek mythology, but did they really exist?

As legend goes, if Punxsutawney Phil sees his shadow on Groundhog Day, you should expect six more weeks of winter; if he doesn't, plan for spring.

Temperature-dependent sex is found in certain reptiles and fish. Could it happen in humans?

Is it possible to be allergic to activities like running or walking?

As we continue to unearth ancient remains, the number of early human species grows.

A dog's burying instinct comes courtesy of its wild ancestor, the gray wolf.

Here's how crude oil becomes plastic.

It's open to debate, but a lot of the 19th century was spent in open revolt.

Here's why snow is white and not clear like water or ice.

High-speed cameras show that flies' modified hind wings help with their speedy takeoffs.

Dating is hard, even for scientists.

No one really knows, but there are a few educated guesses.