environment

These Before and After Photos Show How Glaciers in the US Are Melting

Over the past several years, the U.S. Geological Survey has been shooting a "Repeat Photography" project in various locations to show how glacier ice has been retreating over the past century. Using photos from the late 1800s and early 1900s as references, photographers are rephotographing those same scenes to show how things have changed (and are changing).

Company Plans to Send 28 Tiny Satellites Into Space to Collect Aerial Photos

There are a couple of different types of imaging satellites currently orbiting our planet. On one end of the spectrum are specialized satellites that gather very high-resolution imagery in which you can identify objects as small as 3 feet across. On the other are the lower resolution satellites that beam down photos of larger areas.

California company Planet Labs wants to fill the space in-between, by providing an affordable middle-of-the-road option for companies interested in using it. To that effect, they're planning on launching 28 tiny, mid-resolution satellites called "Doves" into space before the year is out.