1. An opening or vent in Earth’s crust, through which hot gases, lava, and ash are discharged during the time the volcano is active (an eruption). A volcano may be described as active, dormant, or extinct. About 500 volcanoes around the world are known to be active. 2. A cone-shaped…

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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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