2012 is quickly drawing to a close, but that doesn't mean the world has stopped turning. We had some good stuff in this last full week, and here's a selection of the best including 40 hacks you won't want to miss, the best concepts of the year that still haven't shown up, mind-bending optical illusions and logic puzzles, how to explain Santa scientifically, and how the Senate wants to keep spying on you. Check it all out below.

Watch Randi Zuckerberg Have a Facebook Freakout Over Her Photo Going Viral

You probably already read about Randi Zuckerberg's faux-privacy violation on Facebook this week. But odds are you're not part of her inner circle. Lucky for you, a tipster who's "Friends" with RZ gave up the goods directly from her wall. More »

This Awesome Optical Illusion Will Twist Your Brain Into Knots

Kokichi Sugihara loves to screw up human perception. He is the master of 3D optical illusions, designing solid three-dimensional models that do impossible things. This house is his latest creation, presented a few days ago at the European Conference on Visual Perception in Sardinia, Italy. More »

Senate Approves Warrantless Phone Tapping for Next Five Years

By a vote of 73 to 23, the US Senate just voted for the warrantless surveillance of American citizens until 2017. More »

The Hardest Logic Puzzle Ever (and How to Solve It)

It's that strange time of year, the lull between Christmas and New Year, when you're not really celebrating but not really working either. So, how about you wrap your brain around the world's hardest logic puzzle to keep yourself amused? Y'know, just for fun. More »

The 10 Most Exciting Concepts of 2012-Where Are You?

When you're obsessed with finding the most awesome gadgets and devices, there's nothing more heartbreaking than the word "concept." Not only does it mean you're not going to find a given device in stores-it usually means you're never going to find it anywhere. More »

These Are the Best Android Apps of the Year According to Google

You already saw Apple's selection for best apps of the year 2012-which were kind of crappy and ridiculous. Here's Google's own list of best apps for Android. It's not much better than Apple's. Check them out and tell us what you think in the comments. More »

Huge Shark Tank Breaks Inside Chinese Mall, 15 People Injured

Remember that fake image of a Dubai shopping mall flooded by a broken shark tank? Well, it has happened for real inside a shopping center in Shanghai, China, where 33 tons of water and three sharks invaded the mall after the glass shattered into multiple deadly shards. There are 15 people injured. More »

40 Tricks You Must Know for a Much Better 2013

2012 is almost over. It's time to get ready for 2013 with these 40 life tricks that will make the next 12 months-and every month of your existence-a lot easier. Some hacks may be familiar, others will make you go "OMFG!" So bookmark this page and pass it along to your loved ones, because the more you remember, the easiest and more convenient 2013 is going to be. More »

How to Scientifically Explain Santa Claus to Your Children

The Santa questions start firing at you before your kids turn five. How does he speed around the world in a single night? How does he know what I want? Sure, you could deny Santa's existence, but be ready for some tears. More »

The Biggest Tech Disappointments of 2012

Lots of fun, good, and exciting things happened in our world this year. But there were still so many things that could've been truly great, but flopped. Broken promises. Awful gadgets. Here's what broke Gizmodo's heart in 2012. More »