Quantum Experiment in Space Confirms That Reality Is What You Make It
The new work shows that a photon’s nature remains undefined even over thousands of kilometers, says Philippe Grangier, a physicist at the Institute of Optics in Palaiseau, France.
A Defense of the Reality of Time
Time isn’t just another dimension, argues Tim Maudlin. To make his case, he’s had to reinvent geometry.
Can We Really Travel Back in Time to Change History?
Physicist Paul Davies responds to “Mr. Thursday,” Emily St. John Mandel’s short story about time travel.
Future Tense, Slate
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