On the best day of his life, 13-year-old Grady Jacobs is chosen to join Dr. Carter's research team in the Brazilian rain forest. But once he arrives, Grady quickly discovers that Carter's experiments are destroying the forest. He knows he must do something, so he joins forces with the Urah-wau tribe of Indians to defeat Dr. Carter and stop his evil plans.

Green Thumb 2000, Aladdin Paperbacks, New York, NY

ISBN-13: 9780689828867

Trade paperback

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Green Thumb 2000, Turtleback Books

ISBN-13: 9780606200486

Turtleback School & Library edition

Hardcover

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Green Thumb 1999, Simon & Schuster

ISBN-13: 9780689817809

Hardcover

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Green Thumb 1999, Recorded Books

ISBN-13: 9780788735240

Unknown binding

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