Download or read book Phytosphere written by Scott MacKay and published by Penguin. This book was released on 2007 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: When negotiations between the alien Tarsalans and Earth's rulers go horribly wrong, a strange green sphere begins enveloping the planet, causing major devastation, and two brilliant scientists must find a way to destroy this alien phytosphere before it is too late. Original.