She came up with the term as the title of a 1990 conference but saw its later popularity as a little superficial.

Presidential commentary on UFOs didn’t begin in the age of podcasts and social media. For more than 200 years, the question ...

A short remark from Elon Musk about Jesus Christ sparked an unexpected storm of speculation online, as social media users ...

Learn more about the top theories about how life began on Earth, and how it may not have started from scratch.

There were schools of thought in Ancient Greece that speculated about extraterrestrial life, in trying to answer questions ...

Complex cells are thought to be the result of a union between two ancient microorganisms, but scientists have long been ...

A giant virus discovered in Japan is adding fuel to the provocative idea that viruses helped create complex life. Named ushikuvirus, it infects amoebae and shows unique traits that connect different ...

The most widely accepted scientific explanation for the arrival of all complex life on Earth has had an unsolved mystery at its heart. According to the theory, all plants, animals and fungi, known ...

A layer of rock just 520 million years old sat directly on top of ancient rock dating back 1.4 to 1.8 billion years.

The decline of reading and the rise of social media are again transforming what it feels like to be a thinking person.

Ancient evidence suggests a new twist in how we all got here.