Physics

Can Robots Take Over the World? A Renowned Expert Reveals the Truth

Can Robots Take Over the World? A Renowned Expert Reveals the Truth

Elon Musk, Stephen Hawking and Bill Gates have all issued warnings about the increasing capabilities of artificial intelligence. Yet how real is the threat? Is it something we need to worry about in the short to medium term or something that's so far away that we...

Solution to the Grandfather Paradox

If you could travel back in time, and you killed your grandfather, would you be killing your future self? What do physics, complexity theory, and computer science have to say about this famous murderous time-travel paradox?

How To Detect A Secret Nuclear Test

How can we know that North Korea and Iran (to name a few) are exploding nuclear weapons if no inspectors have ever been granted access to suspected nuclear sites in these countries?