A school of fish clump into a ball to guard against predators. The 50 megapixel panorama was taken in October 2009 near the Galapagos Islands. It is made up of 19 individual photographs stitched together.
These Charts Show That Detroit Is Surprisingly Crowded
It's lost a million people since the 1950s, but Detroit is still more densely populated than many major American cities.
This Giant Oil Rig Could Usher in a Radically Altered Arctic
A floating oil rig just delivered to Italian and Norwegian oil companies will soon be operating farther north than any other.