The bin Laden conspiracy theorists do bring up one really good point. How could Pakistan not have known where the terrorist mastermind was hiding?

Just because an alien invasion is very unlikely doesn't mean we shouldn't spend at least some time and effort preparing for the possibility...

DARPA wants machines that can look at video and not just see what's in the frame, but understand it.

A lot of popular science writers who don't know how AI is developed are hyping a Skynet scenario. Don't believe them.

Using video games and realistic virtual simulations to train soldiers has been a sci-fi trope for many years. Experts are wondering if it could soon become a reality.

Inertia applies not only to objects with mass, but to bureaucracy and large institutions that have grown out of control.

Retired military officers claim that aliens are visiting Earth to discourage us from using nuclear weapons on each other. But how would aliens know if we have nukes?

Quantum communication is a powerful tool, but it's not impossible to hack or very practical yet, especially for military purposes.

WikiLeaks' stunt is unlikely to end well for informants helping to fight the Taliban and seems designed only to boost Assange's profile.

Joe Lieberman decided that the best way to tackle cyber-security is by literally shutting off the country's internet on demand with nothing more than an executive order by the president.

Some of this blog's readers would make really scary and really good alien invaders...

While we're trying to get aliens' attention with active SETI, we need to keep in mind that we talk to aliens at our own risk.

Unfortunately for those of us who'd like to remain alive and not irradiated, the ghost of Mutually Assured Destruction lives on.

Can we destroy the world with nukes? It depends on who you ask and what kinds of warheads and damage they include in their calculations...

Defense contractors are trying to turn the internet into an arena for state-sponsored espionage of dubious efficacy and legality.