A solar-powered balloon mission detected a repeating infrasound noise in the stratosphere. Scientists have no idea who or what is making it.
The writing system of the Kushans, which is still unknown, was in use within Central Asia between the years 200 BCE and 700 CE.
For years, scientists have been perplexed by the origins of a gravitational hole in the Indian Ocean. Researchers now believe the explanation could be the submerged floor of an extinct ocean.
Norwegian archaeologists believe they have found the world's oldest runestone inscribed almost 2,000 years ago, making it several centuries older than previous discoveries.
Researchers have uncovered a strange hot spot on the back side of the moon. The most likely culprit is a rock that is very rare outside of Earth.
The mysterious disappearance of Alfred Isaac Middleton. Where're the missing city of Dawleetoo and the casket of gold?