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Macs vs. PCs iPhone Apps Most Popular Web Sites 3-D Graphics 10 Differences Between Macs and PCs Are you a Mac or a PC? Or, are you wondering what the difference is? We've broken down these computers to reveal their strengths and weaknesses. Computers Past and Present How PCs Work 10 Things to Look for When Buying a Laptop 10 Great iPhone Apps It wasn't so long ago that Apple's 25th billion app was download. What are some of the best applications that run on Apple's smartphone? iPhone Pictures How the iPhone Works How to Unlock a Cell Phone or Smartphone Most Popular Web Sites Yeah, yeah, you're the king of the Interwebs, but we bet you aren't familiar with all of the sites that made our gallery. Or are you? Only one way to find out. Internet Developments Are social media sites addictive? 10 Failed Google Projects How 3-D Graphics Work 3-D graphics are essential to realistic computer games and object modeling. But how is a computer model transformed into the image you see on the screen? First 3-D Tornado How 3-D Printing Works Can a computer recreate what you're seeing?   At Discovery, we value your privacy. If you would like to adjust your email preferences, please click this link to our subscription center, where you can manage your account. Please click here to unsubscribe. Discovery Communications, LLC One Discovery Place, Silver Spring, MD 20910