This Week in the Future, April 11-15, 2011

Brazilian police are surveilling you. Big Brother is watching you breathe. Hoteliers are tracking you through those towels you stole. And you’re keeping an eye on the zebras. At least, that’s the message we’re getting from this week’s Baarbarian illustration–an illustration you might win on a free t-shirt.

The rules: Follow us on Twitter (we’re @PopSci) and retweet our This Week in the Future tweet. One of those lucky retweeters will be chosen to receive a custom t-shirt with this week’s Baarbarian illustration on it, thus making the winner entirely too cool for their school, or place of business, or couch. (Those who would rather just buy the t-shirt can do that here.) The stories pictured therein:

• New Washable RFID Chips Track Hotel Towels and Bathrobes
• Brazilian Cops Get Augmented Eyeglasses That Can Pick Guilty Faces Out of a Crowd
• GPS- and WiFi-Enabled Asthma Inhaler Sends Epidemiology Data As It Helps You Breathe
• New Scanner Tracks Zebras’ Built-In Bar Codes

And don’t forget to check out our other favorite stories of the week:

• Six Dream Projects of the 3-D Printing Pioneers
• The Goods: April 2011’s Hottest Gadgets
• Hooking a 9-Volt Battery To Your Brain Improves Your Video Game Skills, Researcher Finds
• Archive Gallery: PopSci’s Most Lovingly Illustrated Cutaways
• With the Space Shuttles Retiring, Mankind is Slowing Down For The First Time in Centuries
• NIST Asks Public to Help Identify Awesome Yet Mysterious Scientific Antiques
• By Teaching Computers ‘Regret,’ Engineers Hope to Teach Them to See the Future
• 2011 Skyscraper Contest: Energy Harvesters, Domes With Holes, and Other Buildings of the Future
• With a Massive Hardware Hack, Libyan Rebels Hijack Disabled Cell Phone Network
• The Navy’s X-47B Will Be So Autonomous, You Can Steer It With Mouse Clicks
• Void Your Warranty: Create a Shinier AppleTV
• The Secrets of Yuri Gagarin, Fifty Years Later
• Video: Powerful Magnets Pointed At British Editor’s Head Prevent Him From Reciting A Nursery Rhyme
• “Einstein’s Pedometer” App Measures How Special Relativity Affects Your Daily Activity
• Are Aliens Living On Planets Inside Black Holes?