From programs to build supersonic flying saucers to atomic bombs, here are the most fascinating declassified military and CIA secrets.
In regressive evolution, organisms lose complex features and can appear to evolve "in reverse." But evolution doesn't retrace its steps, experts said.
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.
A wild theory suggests that consciousness may explain quantum mechanics, by forcing the subatomic particles to choose one concrete outcome.
Bigfoot, or Sasquatch, is one of North America's most enduring legends, with thousands of people claiming to have seen the giant ape-like creature. Here are the most famous Bigfoot sightings.
From the most babies born to one mother to the shortest baby brought to term, these are some of the most notable record-breaking pregnancies.
People who believe that the COVID-19 pandemic was a hoax are likelier to believe all sorts of other conspiracy theories, a new study suggests.
Bigfoot, or Sasquatch, is a large ape-like creature some people believe inhabits North America but there's no hard evidence it actually exists.
Reference Crop circles are really no mystery. These expansive forms of landscape art are made by people.
Reference How to identify your second cousin, first cousin once removed and other distant relatives.
Sometimes dark or milk chocolate gets a white sheen or blotchy white spots on it. What is happening, and is chocolate that has turned white safe to eat?
Conspiracy theories that have taken hold range from a faked moon landing to Barack Obama's birthplace to chemtrails.
A popular YouTube channel is trying to convince viewers that photos of an avalanche on an island near Antarctica depict an alien spaceship crash site.
A trip through the scientific research into paranormal experiences leads directly to the human brain.
Ghost hunters use some very high-tech equipment and plenty of illogic. And somehow they fail to find what they seek. But of course, the hunt continues.