Earth Day 2010

Yesterday was Earth Day, since 1970 it's been a day set aside to remember and appreciate the Earth's environment, and all of our roles within it. As a way to help appreciate and observe our environment, I've collected 39 recent images here, each a glimpse into some aspect of the world around us, how it affects and sustains us, and how we affect it. Here's hoping everyone had a great Earth Day yesterday.

The most detailed true-color image of the entire Earth created to date. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-color mosaic of every square kilometer of our planet. Much of the information contained in this image came from a single remote-sensing device-NASA's Moderate Resolution Imaging Spectroradiometer, or MODIS. Flying over 700 km above the Earth onboard the Terra satellite. (NASA/Goddard Space Flight Center)