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Chapter one
Extraterrestrial


What Are the Odds of Alien Contact?
Bringing the Drake Equation up to date.

It May Not Feel Like Anything To Be an Alien
Humans may have one thing that advanced aliens don’t—consciousness.

Why Discovering Martians Could Be Disappointing
There are two kinds of extraterrestrial life with very different implications.

Galactic Settlement and the Fermi Paradox
The results of galactic colonization models are a mixed bag for SETI optimists.
Related Facts So Romantic
“Reality provides us with facts so romantic that imagination itself could add nothing to them.” —Jules Verne
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Biology
Australia’s Secret Rescue of Ancient Trees Offers an Insight Into Evolution
When I read that more than a billion animals had lost their lives to bushfires still raging in Australia, I froze, staring at the incomprehensible figure on my screen. A sort of sinking…
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Biology
The Alien-Haunted World
Did you know that there are many scientists who devote their working lives to skillfully charting out the most unassuming chunks of our solar system—chunks that none of our species will…
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Ideas
A Simple Way to Reduce Cognitive Bias
Would you like to be more rational? Of course you would. Who doesn’t want to behave and think more reasonably? Good news: New research, from Harvard psychologist Ellen Langer, suggests…
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Ideas
How Universes Might Bubble Up and Collide
Reprinted with permission from Quanta Magazine’s Abstractions blog.What lies beyond all we can see? The question may seem unanswerable. Nevertheless, some cosmologists have a response:…
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