All I know is silicon life; you're the carbon-based life, you tell me whether it's worth it.

If it is widespread on Mars, carbon-based life would be difficult at the soil surface.

Thirty percent of the Earth's surface are "red zones", which have suffered the worst contamination and can no longer support human or carbon-based life.

It was as if carbon-based life reached an evolutionary tipping point for complexity.

Still, in very general terms, they are carbon-based life, like us.

Maybe this is a survivor from a time when the universe did not support carbon-based life.

And what was the heart of all carbon-based life?

Since it can't digest carbon-based life, it obviously isn't pursuing us for food.

They are not organic carbon-based life as we know it, but are solid metal.

Why would the Quintara, who are carbon-based life, design a system so clever and then allow another form of life to use it?