Pluto was once called the ninth major planet of our solar system. Over the last few decades, new instruments and observations have changed our understanding of Pluto. Pluto is now thought to be just a large icy body in the outer region of the solar system (called the Kuiper Belt).…

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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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