The sheer abundance of stars in the universe suggests that, somewhere, an intelligent lifeform should be warming itself on a distant planet. Even if life evolves rarely, ET should be phoning. Yet, by all appearances, humanity seems to be flying …
Did climate change already kill all the aliens we’ve been searching for? According to astrophysicist Adam Frank, it’s certainly a possibility — and whether humans are doomed to the same fate may already be out of our hands. Jeff and …
