"Plan C for Civilization" takes stock of the amateurs and experts who see promise in using technology to cool the Earth.

How could the principle of "radical mundanity" proposed by the Fermi paradox help explain why humans haven't found evidence of extraterrestrial technological civilizations (ETCs)? This is what a ...

Complex, intelligent life in the galaxy appears vanishingly rare, with the nearest possible civilization perhaps 33,000 light-years distant. Yet despite the odds, scientists insist that continuing the ...

In 1950, famed astrophysicist Enrico Fermi posed a profound question during a casual lunch with colleagues: Where is everybody? In other words, if there’s an extremely high probability that advanced ...

We leave behind plastic, satellites, and nuclear waste—but even those won’t last forever. The Silurian Hypothesis asks a haunting question: could another advanced civilization have risen and vanished ...