The Jurassic Park author's latest "techno-thriller" certainly delivers in the techno department. Crichton equips his action-figure characters with Bond-worthy man-toys including submersibles with potassium hydroxide scrubbers and hypersonic cavitation generators—everything but the transponder-equipped kitchen sink. But the hardware outshines the leaden plot, which involves an attempt by environmentalists trying to save the planet and is burdened by Crichton's disquisitions about global warming being a fraud. Padding for this 603-pager comes from graphs and pseudo-brainy dialogue ("I tested that hypothesis and found it heuristically valuable"). Scary? You bet.