The Silurian hypothesis asks whether it might be possible to find evidence of a pre-human industrial civilization in Earth’s geologic record—even one that might have existed millions of years ...

What if we aren't the first technological civilization on Earth? We’re almost certainly the first technological civilization on Earth. But what if we’re not? We are. Although how sure are we ...

Recent advances in ancient DNA analysis have sparked intriguing discussions about the possibility of non-human entities once ...

Since they have not found any pre-human civilization, they have been looking at what impact we as a species are having on the planet, and how long those impacts are likely to be detectable into ...

Schmidt is the director of NASA's Goddard Institute for Space Studies (a.k.a. GISS) a world-class climate-science facility. One day last year, I came to GISS with a far-out proposal. In my work as an ...

By connecting those records to what archaeologists and historians tell us was going on with human civilizations at the time, "Climate Chaos" chronicles a scintillating synchronization between the ...