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Photoshop Tutorial: How to Replace a Burnt-out Sky in a Photo.
Photoshop CC 2017 tutorial showing how to create a blue sky with feathery clouds from scratch and use it to replace a ...
Scientists race to understand Lake Tahoe’s clarity paradox
A fishing boat customized into a floating laboratory, the John LeConte is an iconic fixture on Lake Tahoe, shuttling UC Davis ...
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How to see the northern lights—and why they’re showing up more recently
(Why is the sky blue? Learn about it with your kids ... 60 to 150 miles (100 to 240 kilometers) above Earth’s surface. In the very thick lower atmosphere, less than 60 miles (100 kilometers ...