"I'm not against the idea that there were higher nutrients 2.1 billion years ago but I'm not convinced that this could lead to diversification to form complex life," he said, suggesting more ...

A study crossing the boundaries between science fiction and scientific laws explores the potential limits of life as we know ...

That means organisms with a complex chemical system that ... nitrogen dioxide in the atmosphere. These are examples of tracers of intelligent life called technosignatures. It's unclear how and ...

It's among the earliest examples of continuous ... "They show that a type of complex behaviour had evolved before the Cambrian (when multi-cellular life exploded into a wide variety of forms ...

This phenomenon of one cell living inside another, called endosymbiosis, has fueled the evolution of complex life. So much of life relies on ... While illuminating, this bacterium-fungus pairing is ...

The authors point to historical examples where people predicted some complex feature of life that biologists later confirmed. Examples include the Schrodinger view of information molecules as ...

It certainly seems to have been one of the most unlikely. For many years, biologists assumed that the emergence of complex life was an evolutionary inevitability. Once simple life emerged ...

Described in a study published in the journal Evolution & Development, this 555 million-year-old organism represents one of the earliest examples of complex life on Earth. Quaestio simpsonorum is ...

Complex life on Earth may be older than previously thought. New findings suggest that conditions for life existed 1.5 billion years earlier than it was originally considered to have begun.