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|  | | Dusty Differences Between Mars and Earth
Both planets face dust storms—and the occasional flight delays that come with them. | |
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|  | | Fires Near Yosemite
For the second time in a month, drought-parched forests near the park are burning. | |
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|  | | Southern Nights with Lights
The aurora australis fluttered north and south of the Antarctic Circle on several nights in July. | |
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|  | | Mountain Shadows, Western Mongolia
Low Sun angles help reveal the three dimensions of a landscape. | |
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|  | | A Reservoir Runs Dry
A reservoir in northern Mexico drops to less than one percent capacity amid a persistent and deepening drought that defies borders. | |
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|  | | Lake Mead Keeps Dropping
Water levels are at their lowest since 1937. | |
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|  | | A Lake of Superior Cold
At least one place in the U.S. is colder than normal. | |
