Physics
In Memoriam: John D. Barrow
Remembering the maverick physicist who pioneered an “anthropic” approach to cosmology
Stories by Paul Davies
Biology
The Cosmos Might Be Mostly Devoid of Life
We still have no idea how easy it is for life to arise—and it may be incredibly difficult
Space
Maybe Life in the Cosmos Is Rare After All
The conclusion that the universe is teeming with biology is based on an unproved assumption
Physics
How to Build a Time Machine
It wouldn't be easy, but it might be possible
Physics
Time’s Passage is Probably an Illusion
From the fixed past to the tangible present to the undecided future, it feels as though time flows inexorably on. But that is an illusion
The Sciences
Are Aliens Among Us?
In pursuit of evidence that life arose on Earth more than once, scientists are searching for microbes that are radically different from all known organisms
Tech
How to Build a Time Machine
It wouldn't be easy, but it might be possible
The Sciences
That Mysterious Flow
From the fixed past to the tangible present to the undecided future, it feels as though time flows inexorably on. But that is an illusion
The Sciences
How to Build a Time Machine
It wouldn't be easy, but it might be possible
The Sciences
That Mysterious Flow
From the fixed past to the tangible present to the undecided future, it feels as though time flows inexorably on. But that is an illusion
Space
How to Build a Time Machine
It wouldn't be easy, but it might be possible
The Sciences
That Mysterious Flow
From the fixed past to the tangible present to the undecided future, it feels as though time flows inexorably on. But that is an illusion
