Peter McGrail, left, and Todd Schaef, explain their project to capture carbon dioxide gas inside basalt rock formations at Pacific Northwest National Laboratory in Richland, Wash.
(Photo by Jackie Johnston / AP)
A tourist uses a hand fan inside the tomb that belongs to Queen Meresankh III at the historical site of the Giza Pyramids, near Cairo, Egypt.
(Photo by Nariman El-Mofty / AP)
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