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The rats, all named after fictional detectives, can identify the distinct criminal odors of gunpowder, drugs and more. For cheap.

Lots of news from Mars today! Here are the results of six new studies of the samples the Curiosity rover took during its first 100 days on the red planet.

We've gotten tons of feedback since announcing Tuesday that we would no longer publish comments on our website. Here are some of the most thoughtful responses.

The _Star Wars _vessels are puny compared to the ship from _Independence Day. _

A paleobotanist studying plant evolution, a statistician developing new treatment regimens, and other amazing people

Air Force Gen. Mike Hostage says drones are worthless in contested airspace. They are, but here's why that doesn't matter.

The periodic table gets a few tweaks.

Turrell, whose solo exhibit at the Guggenheim closes Wednesday, doesn't just play with the way our eyes work; he exploits how our mind processes images to reveal that at a fundamental level, everything we see is an illusion.

Horse_ebooks, perhaps the most famous spambot on Twitter, is not what it appears. Today the New Yorker revealed the story—and the people—behind the project. The culprits: a BuzzFeeᴅ employee, a physics student, and, somehow, Susan Orlean.

Yes, and some love to travel.

A jacket that protects your personal space, wallpaper that lights up at your touch, and more

Starting today, PopularScience.com will no longer accept comments on new articles. Here's why.

The Atacama Large Millimeter/submillimeter Array (ALMA) telescope has already made some impressive discoveries, with more on the horizon.

I mean, it's not just me, right?

Studies of the human body made by the intrepid scientists of the 1500s through the 1700s

Flashbacks do occur, but very rarely.