View from space shows Earth in a state of flux

A series of stunning before-and-after photos from NASA reveals nature's course and humanity's impact on the planet.

The Earth's appearance has transformed over the course of millions of years. Obviously, for much of that time scientists weren't around to track the Earth's shifting face. But with the advent of the space age in the second half of the 20th century, it became possible to view the planet from afar and get a sweeping perspective. Indeed, an updated NASA gallery published in conjunction with Earth Day 2012 features more than 160 comparison views demonstrating in sharp relief the very real changes that have taken place during the Earth's recent history.

Featured Video
This content is rated TV-MA, and is for viewers 18 years or older. Are you of age?
Sorry, you are not old enough to view this content.

Microsoft enters the laptop game with the hybrid Surface Book

This powerful 13.5-inch laptop include Nvidia graphics and a new hybrid hinge.

by Dan Ackman