There is no known physics theory that is true at every scale—there may never be.
After a decade, Peter Woit still thinks string theory is a gory mess.
What does a rational scientist do with an impossible result?
Portable slow-light technology could measure the speed of glaciers in real time.
New theories have mixed perception and knowledge into the hardest of sciences.
Fundamental theories of nature aren’t allowed to hide information.
Isaac Newton spurned social contact but also relied on it for his greatest work.
The real genius in the Nobel Prize-winning discovery is not who you think it is.
The Princeton physicist on what’s wrong with inflation theory and his view of the Big Bang.
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