30 Before-and-After Photos That Show How Much the World Has Changed

NOW: The popularity of selfies has exploded in the past decade, thanks to technology and social media platforms like Snapchat.

Apple added a front-facing camera to the iPhone 4 in 2010, giving way to a new generation of selfies that were a lot less blurry and much more posed. Since then, selfies have become a worldwide phenomenon: Instagram has more than 390 million #selfie photos to date.