The ancient water could host ancient life and could be a sign that Mars, too, could host ancient water and life.
![](http://static.ddmcdn.com/gif/everest-250.jpg)
Earth's global thaw has reached Mount Everest, the world's tallest peak.
![](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-05-northwest-passage-250.jpg)
A meeting of Arctic nations is attracting international
attention. But how will countries respond to changes in the region?
![](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-05-dinotracks01-250.jpg)
All you have to do is walk in the right stinky right place.
Trackways in Brazil have lasted more than 100 million years.
![](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-05-ice-wall-250.jpg)
Extremes of fire and ice ravaged homes on different ends of North America recently.
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