Xone of Contention - Anthony, Piers

A climatic catastrophe is about to cause a massive meltdown that threatens to inundate the ancient forests of Xanth. The only way to avert this disaster is to find exactly when this ghastly greenhouse effect began. But there is a hitch--the only ones who can make the journey are ordinary humans who are unaffected by magic.

Xone of Contention 2000, Tor Books, New York, NY

ISBN-13: 9780812555233

Mass-market paperback

Xone of Contention 1999, Tor Books, New York, NY

ISBN-13: 9780312866914