Researchers suggest the opportunity of a complicated alien civilization current on Earth earlier than people, difficult the notion that humanity is the planet’s first civilization.

The Silurian Speculation means that proof of historical superior civilizations could also be buried beneath geological layers, making detection tough with present strategies.

Astrophysicists Adam Frank and Gavin Schmidt spotlight fossil carbon from the Carboniferous Interval as potential proof for an industrial civilization that might have existed hundreds of thousands of years in the past.

Important world temperature will increase, such because the Paleocene–Eocene Thermal Most, could point out the presence of a high-tech civilization in Earth’s distant previous.

Historic superior civilizations, together with the Indus Valley, Historic Egypt, the Maya, and Mesopotamia, exhibit unexplained technological achievements that increase questions on attainable extraterrestrial affect.

The Antikythera Mechanism, an historical analog laptop found in a shipwreck, stays a thriller, showcasing superior know-how that didn’t reappear till the 14th century.

The seek for proof of pre-human superior civilizations continues, with scientists exploring Earth’s geological historical past for potential indicators of previous life and know-how.