The ancient Egyptian pyramids have stood for thousands of years and are among the world's most enduring monuments. But what did the pyramids look like when they were first built?
Life's Little Mysteries answers fascinating questions about the world around you and the stuff in it, including wild questions you didn't even know you had.
And check out our "Life's Little Mysteries" podcast, where we answer questions about mysteries big and small — about ancient civilizations; our planet and solar system; the plants and animals that live alongside us; our bodies and how they work; and more. Listen in on Apple podcasts, Spotify and Audioboom.
The amount of energy released in an earthquake is controlled by how much of the crust breaks. The good news is, we're not likely to see a magnitude 10.
If you have the right vantage point, a rainbow might look circular. Here's the science behind why some rainbows look like arches and others don't.
Mental fuzziness can be frustrating and can be caused by lack of sleep or even an underlying illness.
In regressive evolution, organisms lose complex features and can appear to evolve "in reverse." But evolution doesn't retrace its steps, experts said.
The characteristic zigzag pattern of lightning is caused by a highly conductive form of oxygen that builds up as the bolt travels toward the ground.
In the context of a disease, the transition from "epidemic" to "endemic" means a pathogen is no longer causing outbreaks but isn't disappearing.
It's easy to fold a piece of paper in half once, twice or even three or four times. But what's the highest number of times one piece of paper can be folded in half?
Once a person is dead, their body usually starts to decay immediately, although a good embalming job can delay decay.
In some interpretations of quantum mechanics, such as the Many-Worlds interpretation or the Pilot Wave Theory, parallel universes may form every time a subatomic particle goes through any interaction.
A wild theory suggests that consciousness may explain quantum mechanics, by forcing the subatomic particles to choose one concrete outcome.