igneous rock:

One of the three main kinds of rock, formed from the cooling and hardening of magma or lava that comes from within the earth. Granite and basalt are common examples of igneous rock.

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Earth Day eBook SaleWednesday April 11, 2018

Earth Day eBook Sale

I am so pleased that HarperCollins is doing a special promotion with two of my books for Earth Day. Between now and April 23, the eBook editions of two of my books, GLOBAL WARMING and WILDFIRES, will be on sale for just 99¢…

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