Sentences with phrase «ancient ocean mud»
In kid - friendly language, the authors incorporate the work of nearly forty - five scientists into easily - understood reads, ranging from Dr. Camille Parmesan's information on the Edith's checkerspot butterfly, to Dr. Lloyd Keigwin, who studies ancient ocean mud cores.
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These clues include the earlier spring arrivals of migrating birds, earlier blooming of wildflowers and Washington DC's cherry trees, melting glaciers and icecaps, micro-fossils from cores of mud from the ocean floor, and bubbles of ancient air retrieved from cores of glacial ice.