Google has a new site that lets you see timelapse satellite images from the early 80s to now. Here are a few things we’ve have changed on our planet’s surface.
1. Las Vegas has sprawled for miles and miles:
2. Tech companies have fueled insane expansion in cities like Shenzhen, China:
For the rest of the story: http://www.buzzfeed.com/jwherrman/how-humans-have-changed-the-earth-in-the-last-20-years