As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

Researchers present an alternative to the long-held “hard steps” theory to explain the evolution of complex life, suggesting ...

A rare full seven-planet alignment will be visible in the early night sky between Feb. 22 and 28. We have the tips you need ...

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar ...

Humanity may not be extraordinary but rather the natural evolutionary outcome for our planet and likely others, according to a new model for how intelligent life developed on Earth.

Researchers from Penn State University proposed in a new academic paper that human-like lifeforms could arise as a logical consequence of a planet’s development — contradicting the long-held “hard ...

Researchers from Penn State University proposed in a new academic paper that human ... of rare occurrences — meaning that few, if any, civilizations are bound to exist on other planets.

Scientists challenge the idea that intelligent life is rare. They argue that evolution follows planetary changes, not random ...

Since the first farmers tilled the soil more than 10,000 years ago, the plow has been the essential tool of human survival.

If so, that has important effects for life throughout the universe. It suggests that life might have been likely to form ...

The cool conditions which have allowed ice caps to form on Earth are rare events in the planet’s history and require many ...